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Stainless Steel Helical Inserts
Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inch
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel—Right-Hand Threaded | |||||||||||||||
| 2-56 | 0.086" | No. 41 | 0.096" | MS122-095 | 10 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 |
| 2-56 | 0.129" | No. 41 | 0.096" | MS122-135 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.172" | No. 41 | 0.096" | MS122-175 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.215" | No. 41 | 0.096" | MS122-215 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 3-48 | 0.099" | 7/64" | 7/64" | MS122-115 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-48 | 0.148" | 7/64" | 7/64" | MS122-155 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-56 | 0.099" | No. 36 | 0.1065" | MS124-670 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-56 | 0.148" | No. 36 | 0.1065" | MS124-710 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.112" | No. 31 | 0.12" | MS122-076 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.168" | No. 31 | 0.12" | MS122-116 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.224" | No. 31 | 0.12" | MS122-156 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.28" | No. 31 | 0.12" | MS122-196 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.336" | No. 31 | 0.12" | MS122-236 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-48 | 0.112" | No. 31 | 0.12" | MS124-671 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-48 | 0.168" | No. 31 | 0.12" | MS124-711 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 1/8" | No. 29 | 0.136" | MS122-077 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 0.188" | No. 29 | 0.136" | MS122-117 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 1/4" | No. 29 | 0.136" | MS122-157 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 6-32 | 0.138" | No. 25 | 0.1495" | MS122-078 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.207" | No. 25 | 0.1495" | MS122-118 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.276" | No. 25 | 0.1495" | MS122-158 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.345" | No. 25 | 0.1495" | MS122-198 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.414" | No. 25 | 0.1495" | MS122-238 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.138" | No. 25 | 0.1495" | MS124-653 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.207" | No. 25 | 0.1495" | MS124-693 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.276" | No. 25 | 0.1495" | MS124-733 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.164" | No. 16 | 0.177" | MS122-079 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.246" | No. 16 | 0.177" | MS122-119 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.328" | No. 16 | 0.177" | MS122-159 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.41" | No. 16 | 0.177" | MS122-199 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.492" | No. 16 | 0.177" | MS122-239 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.164" | No. 16 | 0.177" | MS124-654 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.246" | No. 16 | 0.177" | MS124-694 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.328" | No. 16 | 0.177" | MS124-734 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 10-24 | 0.19" | No. 5 | 0.2055" | MS122-080 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.285" | No. 5 | 0.2055" | MS122-120 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.38" | No. 5 | 0.2055" | MS122-160 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.475" | No. 5 | 0.2055" | MS122-200 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.57" | 13/64" | 13/64" | MS122-240 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.19" | 13/64" | 13/64" | MS124-655 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.285" | 13/64" | 13/64" | MS124-695 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.38" | 13/64" | 13/64" | MS124-735 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.475" | 13/64" | 13/64" | MS124-775 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.57" | 13/64" | 13/64" | MS124-815 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/4" | H | 0.266" | MS122-081 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/8" | H | 0.266" | MS122-121 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/2" | H | 0.266" | MS122-161 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 5/8" | H | 0.266" | MS122-201 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/4" | H | 0.266" | MS122-241 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 1/4" | 6.7 mm | 6.7mm | MS124-656 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 3/8" | 6.7 mm | 6.7mm | MS124-696 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 1/2" | 6.7 mm | 6.7mm | MS124-736 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 5/8" | 6.7 mm | 6.7mm | MS124-776 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.312" | Q | 0.332" | MS122-082 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.469" | Q | 0.332" | MS122-122 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 5/8" | Q | 0.332" | MS122-162 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.781" | Q | 0.332" | MS122-202 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.938" | Q | 0.332" | MS122-242 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.312" | 21/64" | 21/64" | MS124-657 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.469" | 21/64" | 21/64" | MS124-697 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 5/8" | 21/64" | 21/64" | MS124-737 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.781" | 21/64" | 21/64" | MS124-777 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 3/8" | X | 0.397" | MS122-083 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 0.562" | X | 0.397" | MS122-123 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 3/4" | X | 0.397" | MS122-163 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 0.938" | X | 0.397" | MS122-203 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 1 1/8" | X | 0.397" | MS122-243 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 3/8" | 25/64" | 25/64" | MS124-658 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 0.562" | 25/64" | 25/64" | MS124-698 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 3/4" | 25/64" | 25/64" | MS124-738 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 0.938" | 25/64" | 25/64" | MS124-778 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 0.438" | 29/64" | 29/64" | MS122-084 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 0.656" | 29/64" | 29/64" | MS122-124 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 7/8" | 29/64" | 29/64" | MS122-164 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 0.438" | 29/64" | 29/64" | MS124-659 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 0.656" | 29/64" | 29/64" | MS124-699 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 7/8" | 29/64" | 29/64" | MS124-739 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1/2" | 17/32" | 17/32" | MS122-085 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 3/4" | 17/32" | 17/32" | MS122-125 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1" | 17/32" | 17/32" | MS122-165 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1 1/4" | 17/32" | 17/32" | MS122-205 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1 1/2" | 33/64" | 33/64" | MS122-245 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1/2" | 33/64" | 33/64" | MS124-660 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 3/4" | 33/64" | 33/64" | MS124-700 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1" | 33/64" | 33/64" | MS124-740 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1 1/4" | 33/64" | 33/64" | MS124-780 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 9/16"-12 | 0.562" | 19/32" | 19/32" | MS122-086 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 9/16"-12 | 0.844" | 19/32" | 19/32" | MS122-126 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 9/16"-18 | 0.562" | 37/64" | 37/64" | MS124-661 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 9/16"-18 | 0.844" | 37/64" | 37/64" | MS124-701 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 5/8"-11 | 5/8" | 21/32" | 21/32" | MS122-087 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 0.938" | 21/32" | 21/32" | MS122-127 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 1 1/4" | 21/32" | 21/32" | MS122-167 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 1.562" | 21/32" | 21/32" | MS122-207 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-18 | 5/8" | 41/64" | 41/64" | MS124-662 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 5/8"-18 | 0.938" | 41/64" | 41/64" | MS124-702 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 3/4"-10 | 3/4" | 25/32" | 25/32" | MS122-88 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-10 | 1 1/8" | 25/32" | 25/32" | MS122-128 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-10 | 1 1/2" | 25/32" | 25/32" | MS122-168 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-16 | 3/4" | 49/64" | 49/64" | MS124-663 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 3/4"-16 | 1 1/8" | 49/64" | 49/64" | MS124-703 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 7/8"-9 | 7/8" | 29/32" | 29/32" | MS122-89 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 7/8"-9 | 1.312" | 29/32" | 29/32" | MS122-129 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 7/8"-14 | 7/8" | 57/64" | 57/64" | MS124-664 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 7/8"-14 | 1.312" | 57/64" | 57/64" | MS124-704 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1"-8 | 1" | 1 1/32" | 1 1/32" | MS122-90 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 1"-8 | 1 1/2" | 1 1/32" | 1 1/32" | MS122-130 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 1"-12 | 1" | 1 1/32" | 1 1/32" | MS124-651 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1"-12 | 1 1/2" | 1 1/32" | 1 1/32" | MS124-691 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1"-14 | 1" | 1 1/32" | 1 1/32" | MS124-665 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1"-14 | 1 1/2" | 1 1/32" | 1 1/32" | MS124-705 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/8"-7 | 1 1/8" | 1 11/64" | 1 11/64" | MS122-91 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/8"-7 | 1.688" | 1 11/64" | 1 11/64" | MS122-131 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/8"-12 | 1 1/8" | 1 5/32" | 1 5/32" | MS124-666 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/8"-12 | 1.688" | 1 5/32" | 1 5/32" | MS124-706 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/4"-7 | 1 1/4" | 1 19/64" | 1 19/64" | MS122-92 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/4"-7 | 1 7/8" | 1 19/64" | 1 19/64" | MS122-132 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/4"-12 | 1 1/4" | 1 9/32" | 1 9/32" | MS124-667 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/4"-12 | 1 7/8" | 1 9/32" | 1 9/32" | MS124-707 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/2"-6 | 1 1/2" | 1 35/64" | 1 35/64" | MS122-94 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/2"-6 | 2 1/4" | 1 35/64" | 1 35/64" | MS122-134 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 1 1/2"-12 | 2 1/4" | 1 17/32" | 1 17/32" | MS124-709 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 | 000000 | 00 |
Lubricated Stainless Steel Helical Inserts
A dry film keeps the screw from sticking or binding in these inserts during installation. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
Inserts that meet DIN 8140 adhere to international standards for dimensions.
For technical drawings and 3-D models, click on a part number.
Inch
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel | |||||||||||||||
| 2-56 | 0.086" | No. 41 | 0.096" | MIL-I-8846, MS122-095 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 |
| 2-56 | 0.129" | No. 41 | 0.096" | MIL-I-8846, MS122-135 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.172" | No. 41 | 0.096" | MIL-I-8846, MS122-175 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 4-40 | 0.112" | No. 31 | 0.12" | MIL-I-8846, MS122-076 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.168" | No. 31 | 0.12" | MIL-I-8846, MS122-116 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.224" | No. 31 | 0.12" | MIL-I-8846, MS122-156 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 6-32 | 0.138" | No. 25 | 0.1495" | MIL-I-8846, MS122-078 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.207" | No. 25 | 0.1495" | MIL-I-8846, MS122-118 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.276" | No. 25 | 0.1495" | MIL-I-8846, MS122-158 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 10-24 | 0.285" | No. 5 | 0.2055" | MIL-I-8846, MS122-120 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.19" | 13/64" | 13/64" | MIL-I-8846, MS124-655 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.285" | 13/64" | 13/64" | MIL-I-8846, MS124-695 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.38" | 13/64" | 13/64" | MIL-I-8846, MS124-735 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/4" | H | 0.266" | MIL-I-8846, MS122-081 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/8" | H | 0.266" | MIL-I-8846, MS122-121 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/2" | H | 0.266" | MIL-I-8846, MS122-161 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.312" | Q | 0.332" | MIL-I-8846, MS120-082 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.469" | Q | 0.332" | MIL-I-8846, MS122-121 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 5/8" | Q | 0.332" | MIL-I-8846, MS122-162 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
Metric
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel | ||||||||||||||||
| M2.5 | 0.45 | 2.5 | No. 37 | 0.104" | DIN 8140, MIL-I-8846, SAE MA3280-101 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 0000000 |
| M2.5 | 0.45 | 5 | No. 37 | 0.104" | DIN 8140, MIL-I-8846, SAE MA3280-201 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M3 | 0.5 | 3 | 3.2 mm | 3.2mm | DIN 8140, MIL-I-8846, SAE MA3280-102 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M3 | 0.5 | 4.5 | 3.2 mm | 3.2mm | DIN 8140, MIL-I-8846, SAE MA3280-152 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M3 | 0.5 | 6 | 3.2 mm | 3.2mm | DIN 8140, MIL-I-8846, SAE MA3280-202 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M4 | 0.7 | 4 | No. 19 | 0.166" | DIN 8140, MIL-I-8846, SAE MA3280-104 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| M4 | 0.7 | 6 | No. 19 | 0.166" | DIN 8140, MIL-I-8846, SAE MA3280-154 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| M4 | 0.7 | 8 | No. 19 | 0.166" | DIN 8140, MIL-I-8846, SAE MA3280-204 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| M5 | 0.8 | 5 | 5.3 mm | 5.3mm | DIN 8140, MIL-I-8846, SAE MA3280-105 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M5 | 0.8 | 7.5 | 5.3 mm | 5.3mm | DIN 8140, MIL-I-8846, SAE MA3280-155 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M6 | 1 | 6 | 6.3 mm | 6.3mm | DIN 8140, MIL-I-8846, SAE MA3280-106 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M6 | 1 | 9 | 6.3 mm | 6.3mm | DIN 8140, MIL-I-8846, SAE MA3280-156 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M6 | 1 | 12 | 6.3 mm | 6.3mm | DIN 8140, MIL-I-8846, SAE MA3280-206 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M8 | 1.25 | 8 | 8.4 mm | 8.4mm | MIL-I-8846, SAE MA3280-109 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M8 | 1.25 | 12 | 8.4 mm | 8.4mm | DIN 8140, MIL-I-8846, SAE MA3280-159 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| M8 | 1.25 | 16 | 8.4 mm | 8.4mm | DIN 8140, MIL-I-8846, SAE MA3280-209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
Stainless Steel Screw-Locking Helical Inserts
A distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inch
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel | |||||||||||||||
| 2-56 | 0.086" | No. 41 | 0.096" | MS21209C0210, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 |
| 2-56 | 0.129" | No. 41 | 0.096" | MS21209C0215, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.172" | No. 41 | 0.096" | MS21209C0220, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.215" | No. 41 | 0.096" | MS21209C0225, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 3-48 | 0.099" | 7/64" | 7/64" | MS21209C0310, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-48 | 0.148" | 7/64" | 7/64" | MS21209C0315, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-56 | 0.099" | No. 36 | 0.1065" | MS21209F0310, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3-56 | 0.148" | No. 36 | 0.1065" | MS21209F0315, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.112" | No. 31 | 0.12" | MS21209C0410, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.168" | No. 31 | 0.12" | MS21209C0415, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.224" | No. 31 | 0.12" | MS21209C0420, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.28" | No. 31 | 0.12" | MS21209C0425, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.336" | No. 31 | 0.12" | MS21209C0430, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-48 | 0.112" | No. 31 | 0.12" | MS21209F0410, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-48 | 0.168" | No. 31 | 0.12" | MS21209F0415, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 1/8" | No. 29 | 0.136" | MS21209C0510, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 0.188" | No. 29 | 0.136" | MS21209C0515, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5-40 | 1/4" | No. 29 | 0.136" | MS21209C0520, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 6-32 | 0.138" | No. 25 | 0.1495" | MS21209C0610, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.207" | No. 25 | 0.1495" | MS21209C0615, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.276" | No. 25 | 0.1495" | MS21209C0620, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.345" | No. 25 | 0.1495" | MS21209C0625, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.414" | No. 25 | 0.1495" | MS21209C0630, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.138" | No. 25 | 0.1495" | MS21209F0610, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.207" | No. 25 | 0.1495" | MS21209F0615, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-40 | 0.276" | No. 25 | 0.1495" | MS21209F0620, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.164" | No. 16 | 0.177" | MS21209C0810, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.246" | No. 16 | 0.177" | MS21209C0815, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.328" | No. 16 | 0.177" | MS21209C0820, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.41" | No. 16 | 0.177" | MS21209C0825, NASM21209 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 0.492" | No. 16 | 0.177" | MS21209C0830, NASM21209 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.164" | No. 16 | 0.177" | MS21209F0810, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.246" | No. 16 | 0.177" | MS21209F0815, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 8-36 | 0.328" | No. 16 | 0.177" | MS21209F0820, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 10-24 | 0.19" | No. 5 | 0.2055" | MS21209C1-10, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.285" | No. 5 | 0.2055" | MS21209C1-15, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.38" | No. 5 | 0.2055" | MS21209C1-20, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-24 | 0.475" | No. 5 | 0.2055" | MS21209C1-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.19" | 13/64" | 13/64" | MS21209F1-10 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.285" | 13/64" | 13/64" | MS21209F1-15, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.38" | 13/64" | 13/64" | MS21209F1-20, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.475" | 13/64" | 13/64" | MS21209F1-25, NASM21209 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.57" | 13/64" | 13/64" | MS21209F1-30, NASM21209 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 12-24 | 0.216" | No. 1 | 0.228" | MS21209C2-10, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 12-24 | 0.324" | No. 1 | 0.228" | MS21209C2-15, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/4" | H | 0.266" | MS21209C4-10, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/8" | H | 0.266" | MS21209C4-15, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/2" | H | 0.266" | MS21209C4-20, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 5/8" | H | 0.266" | MS21209C4-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/4" | H | 0.266" | MS21209C4-30, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 1/4" | 6.7 mm | 6.7mm | MS21209F4-10, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 3/8" | 6.7 mm | 6.7mm | MS21209F4-15, NASM21209 | 10 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 1/2" | 6.7 mm | 6.7mm | MS21209F4-20, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-28 | 5/8" | 6.7 mm | 6.7mm | MS21209F4-25, NASM21209 | 1 | 000000000 | 000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.312" | Q | 0.332" | MS21209C5-10, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.469" | Q | 0.332" | MS21209C5-15, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 5/8" | Q | 0.332" | MS21209C5-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.312" | 21/64" | 21/64" | MS21209F5-10, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.469" | 21/64" | 21/64" | MS21209F5-15, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 5/8" | 21/64" | 21/64" | MS21209F5-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-24 | 0.781" | 21/64" | 21/64" | MS21209F5-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 3/8" | X | 0.397" | MS21209C6-10, NASM21209 | 10 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 0.562" | X | 0.397" | MS21209C6-15, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-16 | 3/4" | X | 0.397" | MS21209C6-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 3/8" | 25/64" | 25/64" | MS21209F6-10, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 0.562" | 25/64" | 25/64" | MS21209F6-15, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 3/4" | 25/64" | 25/64" | MS21209F6-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8"-24 | 0.938" | 25/64" | 25/64" | MS21209F6-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 0.438" | 29/64" | 29/64" | MS21209C7-10, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 0.656" | 29/64" | 29/64" | MS21209C7-15, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-14 | 7/8" | 29/64" | 29/64" | MS21209C7-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 0.438" | 29/64" | 29/64" | MS21209F7-10, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 0.656" | 29/64" | 29/64" | MS21209F7-15, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 7/16"-20 | 7/8" | 29/64" | 29/64" | MS21209F7-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1/2" | 17/32" | 17/32" | MS21209C8-10, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 3/4" | 17/32" | 17/32" | MS21209C8-15, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1" | 17/32" | 17/32" | MS21209C8-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-13 | 1 1/4" | 17/32" | 17/32" | MS21209C8-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1/2" | 33/64" | 33/64" | MS21209F8-10, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 3/4" | 33/64" | 33/64" | MS21209F8-15, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1" | 33/64" | 33/64" | MS21209F8-20, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2"-20 | 1 1/4" | 33/64" | 33/64" | MS21209F8-25, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 9/16"-12 | 0.562" | 19/32" | 19/32" | MS21209C9-10, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 9/16"-12 | 0.844" | 19/32" | 19/32" | MS21209C9-15, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 9/16"-18 | 0.562" | 37/64" | 37/64" | MS21209F9-10, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 9/16"-18 | 0.844" | 37/64" | 37/64" | MS21209F9-15, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 5/8"-11 | 5/8" | 21/32" | 21/32" | MS21209C1010, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 0.938" | 21/32" | 21/32" | MS21209C1015, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 1 1/4" | 21/32" | 21/32" | MS21209C1020, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-18 | 5/8" | 41/64" | 41/64" | MS21209F1010, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 5/8"-18 | 0.938" | 41/64" | 41/64" | MS21209F1015, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 3/4"-10 | 3/4" | 25/32" | 25/32" | MS21209C1210, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-10 | 1 1/8" | 25/32" | 25/32" | MS21209C1215, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-10 | 1 1/2" | 25/32" | 25/32" | MS21209C1220, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 3/4"-16 | 3/4" | 49/64" | 49/64" | MS21209F1210, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 3/4"-16 | 1 1/8" | 49/64" | 49/64" | MS21209F1215, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 7/8"-9 | 7/8" | 29/32" | 29/32" | MS21209C1410, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 7/8"-14 | 7/8" | 57/64" | 57/64" | MS21209F1410, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 7/8"-14 | 1.312" | 57/64" | 57/64" | MS21209F1415, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1"-8 | 1" | 1 1/32" | 1 1/32" | MS21209C1610, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 1"-8 | 1 1/2" | 1 1/32" | 1 1/32" | MS21209C1615, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 | 000000 | 00 |
| 1"-12 | 1" | 1 1/32" | 1 1/32" | MS21209F1610, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
| 1 1/4"-7 | 1 7/8" | 1 19/64" | 1 19/64" | MS21209C2015, NASM21209 | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000 | 00 |
Lubricated Stainless Steel Screw-Locking Helical Inserts
A dry film keeps the screw from sticking or binding in these inserts during installation, yet a distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inch
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | Prong Break-Off Tools | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||
18-8 Stainless Steel | |||||||||||||||
| 2-56 | 0.086" | No. 41 | 0.096" | MS21209C0210L, NASM21209 | 5 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 |
| 2-56 | 0.129" | No. 41 | 0.096" | MS21209C0215L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 2-56 | 0.172" | No. 41 | 0.096" | MS21209C0220L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 |
| 4-40 | 0.112" | No. 31 | 0.12" | MS21209C0410L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.168" | No. 31 | 0.12" | MS21209C0415L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 4-40 | 0.224" | No. 31 | 0.12" | MS21209C0420L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 6-32 | 0.138" | No. 25 | 0.1495" | MS21209C0610L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.207" | No. 25 | 0.1495" | MS21209C0615L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 6-32 | 0.276" | No. 25 | 0.1495" | MS21209C0620L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 00000 |
| 10-24 | 0.285" | No. 5 | 0.2055" | MS21209C1-15L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.19" | 13/64" | 13/64" | MS21209F1-10L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.285" | 13/64" | 13/64" | MS21209F1-15L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 10-32 | 0.38" | 13/64" | 13/64" | MS21209F1-20L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 3/8" | H | 0.266" | MS21209C4-15L, NASM21209 | 5 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4"-20 | 1/2" | H | 0.266" | MS21209C4-20L, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 0.469" | Q | 0.332" | MS21209C5-15L, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 5/16"-18 | 5/8" | Q | 0.332" | MS21209C5-20L, NASM21209 | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |