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Black-Phosphate Steel Easy-to-Install Thread-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Also known as E-Z Lok, these inserts use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. Installation requires a drill bit and a standard tap. Then set the insert with a bolt and two nuts, or use an installation bit.
Inserts with a thin wall are often used in small holes or near the edge of a workpiece.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
Inserts with an extra thick wall are stronger than thick- and thin-wall inserts. Use them to reduce the size of tapped holes.
To drive slotted inserts, you can use a slotted screwdriver instead of using an installation bit or a bolt and two nuts.
For technical drawings and 3-D models, click on a part number.
Inch
Installation Bit
Inserts | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Tap | Installation Bits | ||||||||||
| Thread Size  | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
Black-Phosphate Steel with Thin Wall | |||||||||||
| 10-24 | 5/16"-18 | __ | 5/16" | I | 0.272" | Slotted | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 5/16"-18 | __ | 5/16" | I | 0.272" | Slotted | 10 | 000000000 | 0000 | 000000000 | 0000 |
| 1/4"-20 | 3/8"-16 | __ | 3/8" | Q | 0.332" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-28 | 3/8"-16 | __ | 3/8" | Q | 0.332" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 7/16"-14 | __ | 7/16" | X | 0.397" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-24 | 7/16"-14 | __ | 7/16" | X | 0.397" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 1/2"-13 | __ | 1/2" | 29/64" | 29/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-24 | 1/2"-13 | __ | 1/2" | 29/64" | 29/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 7/16"-14 | 9/16"-12 | __ | 9/16" | 33/64" | 33/64" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 7/16"-20 | 9/16"-12 | __ | 9/16" | 33/64" | 33/64" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 5/8"-11 | __ | 5/8" | 37/64" | 37/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 1/2"-20 | 5/8"-11 | __ | 5/8" | 37/64" | 37/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
Black-Phosphate Steel with Thick Wall | |||||||||||
| 4-40 | 10-32 | __ | 1/4" | 5/32" | 5/32" | Slotted | 10 | 000000000 | 0000 | 000000000 | 0000 |
| 6-32 | 1/4"-20 | __ | 9/32" | No. 7 | 0.201" | Slotted | 10 | 000000000 | 0000 | 000000000 | 0000 |
| 6-32 | M6 | 1 | 6.5mm | 5.1 mm | 5.1mm | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 8-32 | 5/16"-18 | __ | 19/64" | F | 0.257" | Slotted | 10 | 000000000 | 0000 | 000000000 | 0000 |
| 8-32 | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 10-24 | 3/8"-16 | __ | 13/32" | 5/16" | 5/16" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 10-24 | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 10-32 | 3/8"-16 | __ | 13/32" | 5/16" | 5/16" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 10-32 | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 1/4"-20 | 7/16"-14 | __ | 7/16" | 23/64" | 23/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-20 | 7/16"-14 | __ | 1" | 23/64" | 23/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-20 | M10 | 1.5 | 10.5mm | 8.6 mm | 8.6mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-28 | 7/16"-14 | __ | 7/16" | 23/64" | 23/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 1/2"-13 | __ | 31/64" | 27/64" | 27/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 1/2"-13 | __ | 1" | 27/64" | 27/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | M12 | 1.75 | 12.5mm | 10.4 mm | 10.4mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-24 | 1/2"-13 | __ | 31/64" | 27/64" | 27/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 9/16"-12 | __ | 1" | 31/64" | 31/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-24 | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 7/16"-14 | 5/8"-11 | __ | 21/32" | 17/32" | 17/32" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 7/16"-20 | 5/8"-11 | __ | 21/32" | 17/32" | 17/32" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 1/2"-13 | 3/4"-10 | __ | 1" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 1/2"-13 | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 1/2"-20 | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 9/16"-12 | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 9/16"-18 | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 5/8"-11 | 7/8"-9 | __ | 11/16" | 49/64" | 49/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 5/8"-11 | 7/8"-9 | __ | 1 1/8" | 49/64" | 49/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 5/8"-18 | 7/8"-9 | __ | 11/16" | 49/64" | 49/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 3/4"-10 | 1"-8 | __ | 25/32" | 7/8" | 7/8" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 3/4"-16 | 1"-8 | __ | 25/32" | 7/8" | 7/8" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 7/8"-9 | 1 1/4"-7 | __ | 1 1/8" | 1 7/64" | 1.1094" | Slotted | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 7/8"-14 | 1 1/4"-7 | __ | 1 1/8" | 1 7/64" | 1.1094" | Slotted | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 1"-8 | 1 3/8"-12 | __ | 1 1/4" | 1 9/32" | 1 9/32" | Slotted | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 1"-14 | 1 3/8"-12 | __ | 1 1/4" | 1 9/32" | 1 9/32" | Slotted | 1 | 000000000 | 00000 | 000000000 | 00000 |
Black-Phosphate Steel with Extra Thick Wall | |||||||||||
| 1/4"-20 | 1/2"-13 | __ | 31/64" | 27/64" | 27/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 5/8"-11 | __ | 21/32" | 17/32" | 17/32" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 7/8"-9 | __ | 11/16" | 49/64" | 49/64" | Slotted | 5 | 000000000 | 00000 | 000000 | 00 |
| 5/8"-11 | 1"-8 | __ | 25/32" | 7/8" | 7/8" | Slotted | 5 | 000000000 | 00000 | 000000 | 00 |
Metric
Installation Bit
Inserts | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Tap | Installation Bits | ||||||||||||
| Thread Size | Thread Pitch, mm | Thread Spacing | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
Black-Phosphate Steel with Thin Wall | |||||||||||||
| M4 | 0.7 | Coarse | 5/16"-18 | __ | 5/16" | I | 0.272" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | Coarse | 5/16"-18 | __ | 5/16" | I | 0.272" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| M6 | 1 | Coarse | 3/8"-16 | __ | 3/8" | Q | 0.332" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | 7/16"-14 | __ | 7/16" | X | 0.397" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 1/2"-13 | __ | 1/2" | 29/64" | 29/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | 5/8"-11 | __ | 5/8" | 37/64" | 37/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
Black-Phosphate Steel with Thick Wall | |||||||||||||
| M3 | 0.5 | Coarse | M6 | 1 | 6.5mm | 5.1 mm | 5.1mm | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M4 | 0.7 | Coarse | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M5 | 0.8 | Coarse | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M6 | 1 | Coarse | 3/8"-16 | __ | 13/32" | 5/16" | 5/16" | Slotted | 10 | 000000000 | 0000 | 000000000 | 0000 |
| M6 | 1 | Coarse | M10 | 1.5 | 10.5mm | 8.6 mm | 8.6mm | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | 1/2"-13 | __ | 31/64" | 27/64" | 27/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | M12 | 1.75 | 12.5mm | 10.4 mm | 10.4mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M10 | 1.25 | Fine | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 | 000000000 | 0000 |
| M10 | 1 | Extra Fine | 9/16"-18 | __ | 29/64" | 33/64" | 33/64" | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M12 | 1.75 | Coarse | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 5 | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M12 | 1.25 | Extra Fine | 5/8"-18 | __ | 29/64" | 37/64" | 37/64" | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M12 | 1.25 | Extra Fine | 5/8"-18 | __ | 45/64" | 37/64" | 37/64" | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M14 | 2 | Coarse | 7/8"-9 | __ | 11/16" | 49/64" | 49/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| M14 | 1.25 | Extra Fine | 3/4"-16 | __ | 21/64" | 11/16" | 11/16" | __ | 5 | 000000000 | 0000 | 000000 | 00 |
| M14 | 1.25 | Extra Fine | 3/4"-16 | __ | 29/64" | 11/16" | 11/16" | __ | 5 | 000000000 | 0000 | 000000 | 00 |
| M14 | 1.25 | Extra Fine | 3/4"-16 | __ | 45/64" | 11/16" | 11/16" | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M14 | 1.25 | Extra Fine | M18 | 1.5 | 11.5mm | 16.5 mm | 16.5mm | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M16 | 2 | Coarse | 1"-8 | __ | 25/32" | 7/8" | 7/8" | Slotted | 5 | 000000000 | 00000 | 000000000 | 00000 |
| M16 | 2 | Coarse | M24 | 3 | 20mm | 21 mm | 21mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M18 | 1.5 | Fine | 1"-12 | __ | 29/64" | 59/64" | 59/64" | __ | 1 | 000000000 | 0000 | 000000 | 00 |
| M20 | 2.5 | Coarse | M36 | 4 | 30mm | 33 mm | 33mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M24 | 3 | Coarse | M36 | 4 | 30mm | 33 mm | 33mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
18-8 Stainless Steel Easy-to-Install Thread-Locking Inserts
Made of 18-8 stainless steel, these inserts have good corrosion resistance. Also known as E-Z Lok, they use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. They may be mildly magnetic. Installation requires a drill bit and a standard tap. Then set the insert with an installation bit, a slotted screwdriver, or a bolt with two nuts.
Inserts with a thin wall are often used in small holes or near the edge of a workpiece.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
Inserts with an extra thick wall are stronger than thick- and thin-wall inserts. Use them to reduce the size of tapped holes.
For technical drawings and 3-D models, click on a part number.
Inch
Installation Bit
Inserts | Installation Bits | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel with Thin Wall | ||||||||||
| 6-32 | 12-28 | 0.28" | No. 14 | 0.182" | Slotted | 5 | 000000000 | 000000 | 000000000 | 00000 |
| 8-32 | 1/4"-28 | 0.29" | No. 3 | 0.213" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 10-24 | 5/16"-24 | 0.313" | I | 0.272" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 10-32 | 5/16"-24 | 0.313" | I | 0.272" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-20 | 3/8"-24 | 3/8" | Q | 0.332" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-28 | 3/8"-24 | 3/8" | Q | 0.332" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 7/16"-20 | 0.438" | 25/64" | 25/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-24 | 7/16"-20 | 0.438" | 25/64" | 25/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 1/2"-20 | 1/2" | 29/64" | 29/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 3/8"-24 | 1/2"-20 | 1/2" | 29/64" | 29/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 7/16"-14 | 9/16"-18 | 0.563" | 33/64" | 0.5156" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 7/16"-20 | 9/16"-18 | 0.563" | 33/64" | 0.5156" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 5/8"-18 | 5/8" | 37/64" | 0.5781" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-20 | 5/8"-18 | 5/8" | 37/64" | 0.5781" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 5/8"-11 | 3/4"-16 | 0.687" | 11/16" | 11/16" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5/8"-18 | 3/4"-16 | 0.687" | 11/16" | 11/16" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
18-8 Stainless Steel with Thick Wall | ||||||||||
| 4-40 | 10-32 | 1/4" | 5/32" | 5/32" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 6-32 | 1/4"-20 | 9/32" | No. 7 | 0.201" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 8-32 | 5/16"-18 | 19/64" | F | 0.257" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 10-24 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 10-32 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-20 | 7/16"-14 | 7/16" | U | 0.368" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 1/4"-28 | 7/16"-14 | 7/16" | U | 0.368" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-18 | 1/2"-13 | 31/64" | 27/64" | 27/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 5/16"-24 | 1/2"-13 | 31/64" | 27/64" | 27/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-16 | 9/16"-12 | 33/64" | 31/64" | 31/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 3/8"-24 | 9/16"-12 | 33/64" | 31/64" | 31/64" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| 7/16"-14 | 5/8"-11 | 21/32" | 17/32" | 17/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 7/16"-20 | 5/8"-11 | 21/32" | 17/32" | 17/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 3/4"-10 | 21/32" | 21/32" | 21/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 1/2"-20 | 3/4"-10 | 21/32" | 21/32" | 21/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5/8"-11 | 7/8"-9 | 11/16" | 49/64" | 49/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3/4"-10 | 1"-8 | 25/32" | 7/8" | 7/8" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
18-8 Stainless Steel with Extra Thick Wall | ||||||||||
| 1/4"-20 | 1/2"-13 | 31/64" | 27/64" | 27/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 5/16"-18 | 9/16"-12 | 33/64" | 31/64" | 31/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| 3/8"-16 | 5/8"-11 | 21/32" | 17/32" | 17/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
Metric
Installation Bit
Inserts | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Tap | Installation Bits | ||||||||||||
| Thread Size | Thread Pitch, mm | Thread Spacing | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel with Thin Wall | |||||||||||||
| M4 | 0.7 | Coarse | 5/16"-24 | __ | 5/16" | I | 0.272" | Slotted | 1 | 000000000 | 00000 | 000000000 | 00000 |
| M5 | 0.8 | Coarse | 5/16"-24 | __ | 5/16" | I | 0.272" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M6 | 1 | Coarse | 3/8"-24 | __ | 3/8" | Q | 0.332" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | 7/16"-20 | __ | 7/16" | 25/64" | 25/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 1/2"-20 | __ | 1/2" | 29/64" | 29/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | 5/8"-18 | __ | 5/8" | 37/64" | 37/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
18-8 Stainless Steel with Thick Wall | |||||||||||||
| M3 | 0.5 | Coarse | M6 | 1 | 6.5mm | 5.1 mm | 5.1mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M4 | 0.7 | Coarse | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M5 | 0.8 | Coarse | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M6 | 1 | Coarse | 3/8"-16 | __ | 13/32" | 5/16" | 5/16" | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M6 | 1 | Coarse | M10 | 1.5 | 10.5mm | 8.6 mm | 8.6mm | Slotted | 5 | 000000000 | 00000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | 1/2"-13 | __ | 31/64" | 27/64" | 27/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M8 | 1.25 | Coarse | M12 | 1.75 | 12.5mm | 10.4 mm | 10.4mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M10 | 1.25 | Fine | 9/16"-12 | __ | 33/64" | 31/64" | 31/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | 3/4"-10 | __ | 21/32" | 21/32" | 21/32" | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | M16 | 2 | 17mm | 14 mm | 14mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 0000 |
| M14 | 2 | Coarse | 7/8"-9 | __ | 11/16" | 49/64" | 49/64" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M16 | 2 | Coarse | 1"-8 | __ | 25/32" | 7/8" | 7/8" | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
| M16 | 2 | Coarse | M24 | 3 | 20mm | 21 mm | 21mm | Slotted | 1 | 000000000 | 0000 | 000000000 | 00000 |
316 Stainless Steel Easy-to-Install Thread-Locking Inserts
These inserts are the most corrosion-resistant thread-locking inserts we offer. Also known as E-Z Lok, they use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. All have thick walls for strength and can be used to fill a large hole with stripped threads. They may be mildly magnetic. Installation requires a drill bit and a standard tap. Then set the insert with an installation bit, a slotted screwdriver, or a bolt with two nuts.
For technical drawings and 3-D models, click on a part number.
Inch
Installation Bit
Inserts | Installation Bits | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Each | Each | ||
316 Stainless Steel with Thick Wall | |||||||||
| 4-40 | 10-32 | 1/4" | 5/32" | 5/32" | Slotted | 000000000 | 00000 | 000000000 | 00000 |
| 6-32 | 1/4"-20 | 9/32" | No. 7 | 0.201" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 8-32 | 5/16"-18 | 19/64" | F | 0.257" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 10-24 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 10-32 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 1/4"-20 | 7/16"-14 | 7/16" | U | 0.368" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 5/16"-18 | 1/2"-13 | 31/64" | 27/64" | 27/64" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 3/8"-16 | 9/16"-12 | 33/64" | 31/64" | 31/64" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 3/4"-10 | 21/32" | 21/32" | 21/32" | Slotted | 000000000 | 0000 | 000000000 | 00000 |
| 3/4"-10 | 1"-8 | 25/32" | 7/8" | 7/8" | Slotted | 000000000 | 00000 | 000000000 | 00000 |
Metric
Installation Bit
Inserts | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Tap | Installation Bits | ||||||||||
| Thread Size | Thread Pitch, mm | Thread Size | Thread Pitch, mm | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Drive Style | Each | Each | ||
316 Stainless Steel with Thick Wall | |||||||||||
| M3 | 0.5 | M6 | 1 | 6.5 | 5.1 mm | 5.1 mm | Slotted | 000000000 | 00000 | 000000000 | 00000 |
| M4 | 0.7 | M8 | 1.25 | 7.5 | 6.9 mm | 6.9 mm | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| M5 | 0.8 | M8 | 1.25 | 7.5 | 6.9 mm | 6.9 mm | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| M6 | 1 | M10 | 1.5 | 10.5 | 8.6 mm | 8.6 mm | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| M8 | 1.25 | M12 | 1.75 | 12.5 | 10.4 mm | 10.4 mm | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| M10 | 1.5 | M16 | 2 | 17 | 14 mm | 14 mm | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| M12 | 1.75 | M16 | 2 | 17 | 14 mm | 14 mm | Slotted | 000000000 | 00000 | 000000000 | 0000 |
Easy-to-Install Thread-Locking Insert Assortments
These assortments include various sizes of thread-locking inserts. Also known as E-Z Lok, they use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. All inserts have thick walls for strength and can be used to fill a large hole.
18-8 stainless steel inserts are more corrosion resistant than black-phosphate steel inserts.
Black-phosphate steel inserts are mildly corrosion resistant.
For technical drawings and 3-D models, click on a part number.
For Tap | ||||||||
|---|---|---|---|---|---|---|---|---|
| Includes | No. of Inserts Included | Thread Size | Thread Pitch, mm | Drill Bit Size | For Max. Hole Dia. | Drive Style | Each | |
Inch Assortments | ||||||||
18-8 Stainless Steel | ||||||||
| 10-24 Thread × 0.406" Installed Lg. (10 Each) 1/4"-20 Thread × 0.438" Installed Lg. (10 Each) 5/16"-18 Thread × 0.484" Installed Lg. (10 Each) 3/8"-16 Thread × 0.516" Installed Lg. (10 Each) 1/2"-13 Thread × 0.656" Installed Lg. (6 Each) | 46 | 3/8"-16 7/16"-14 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 23/64" 27/64" 31/64" 21/32" | 5/16" 23/64" 27/64" 31/64" 21/32" | Slotted | 000000000 | 0000000 |
| 10-32 Thread × 0.406" Installed Lg. (10 Each) 1/4"-28 Thread × 0.438" Installed Lg. (10 Each) 5/16"-24 Thread × 0.484" Installed Lg. (10 Each) 3/8"-24 Thread × 0.516" Installed Lg. (10 Each) 1/2"-20 Thread × 0.656" Installed Lg. (6 Each) | 46 | 3/8"-16 7/16"-14 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 23/64" 27/64" 31/64" 21/32" | 5/16" 23/64" 27/64" 31/64" 21/32" | Slotted | 000000000 | 000000 |
Black-Phosphate Steel | ||||||||
| 10-24 Thread × 0.406" Installed Lg. (10 Each) 1/4"-20 Thread × 0.438" Installed Lg. (10 Each) 5/16"-18 Thread × 0.484" Installed Lg. (10 Each) 3/8"-16 Thread × 0.516" Installed Lg. (10 Each) 1/2"-13 Thread × 0.656" Installed Lg. (6 Each) | 46 | 3/8"-16 7/16"-14 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 23/64" 27/64" 31/64" 21/32" | 5/16" 23/64" 27/64" 31/64" 21/32" | Slotted | 000000000 | 00000 |
| 10-32 Thread × 0.406" Installed Lg. (10 Each) 1/4"-28 Thread × 0.438" Installed Lg. (10 Each) 5/16"-24 Thread × 0.484" Installed Lg. (10 Each) 3/8"-24 Thread × 0.516" Installed Lg. (10 Each) 1/2"-20 Thread × 0.656" Installed Lg. (6 Each) | 46 | 3/8"-16 7/16"-14 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 23/64" 27/64" 31/64" 21/32" | 5/16" 23/64" 27/64" 31/64" 21/32" | Slotted | 000000000 | 00000 |
| 1/2"-13 Thread × 0.656" Installed Lg. (6 Each) 5/8"-11 Thread × 0.688" Installed Lg. (7 Each) 3/4"-10 Thread × 0.781" Installed Lg. (7 Each) 1"-8 Thread × 1 1/4" Installed Lg. (2 Each) | 22 | 3/4"-10 7/8"-9 1"-8 1 3/8"-12 | __ | 21/32" 49/64" 7/8" 1 9/32" | 21/32" 49/64" 7/8" 1 9/32" | Slotted | 000000000 | 00000 |
| 1/2"-20 Thread × 0.656" Installed Lg. (6 Each) 5/8"-18 Thread × 0.688" Installed Lg. (7 Each) 3/4"-16 Thread × 0.781" Installed Lg. (7 Each) 1"-14 Thread × 1 1/4" Installed Lg. (2 Each) | 22 | 3/4"-10 7/8"-9 1"-8 1 3/8"-12 | __ | 21/32" 49/64" 7/8" 1 9/32" | 21/32" 49/64" 7/8" 1 9/32" | Slotted | 000000000 | 00000 |
Metric Assortments | ||||||||
18-8 Stainless Steel | ||||||||
| M3×0.5 mm Thread × 6.5 mm Installed Lg. (10 Each) M4×0.7 mm Thread × 7.5 mm Installed Lg. (10 Each) M5×0.8 mm Thread × 7.5 mm Installed Lg. (10 Each) M6×1 mm Thread × 10.5 mm Installed Lg. (10 Each) M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) | 50 | M6 M8 M10 M12 | 1 1.25 1.5 1.75 | 5.1 mm 6.9 mm 8.6 mm 10.4 mm | 5.1mm 6.9mm 8.6mm 10.4mm | Slotted | 000000000 | 000000 |
| M6×1 mm Thread × 0.406" Installed Lg. (10 Each) M8×1.25 mm Thread × 0.484" Installed Lg. (10 Each) M10×1.5 mm Thread × 0.516" Installed Lg. (10 Each) M12×1.75 mm Thread × 0.656" Installed Lg. (6 Each) | 36 | 3/8"-16 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 27/64" 31/64" 21/32" | 5/16" 27/64" 31/64" 21/32" | Slotted | 000000000 | 000000 |
| M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 17 mm Installed Lg. (10 Each) M12×1.75 mm Thread × 17 mm Installed Lg. (8 Each) M16×2 mm Thread × 20 mm Installed Lg. (5 Each) | 33 | M12 M16 M24 | 1.75 2 3 | 10.4 mm 14 mm 21 mm | 10.4mm 14mm 21mm | Slotted | 000000000 | 000000 |
Black-Phosphate Steel | ||||||||
| M3×0.5 mm Thread × 6.5 mm Installed Lg. (10 Each) M4×0.7 mm Thread × 7.5 mm Installed Lg. (10 Each) M5×0.8 mm Thread × 7.5 mm Installed Lg. (10 Each) M6×1 mm Thread × 10.5 mm Installed Lg. (10 Each) M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) | 50 | M6 M8 M10 M12 | 1 1.25 1.5 1.75 | 5.1 mm 6.9 mm 8.6 mm 10.4 mm | 5.1mm 6.9mm 8.6mm 10.4mm | Slotted | 000000000 | 00000 |
| M6×1 mm Thread × 0.406" Installed Lg. (10 Each) M8×1.25 mm Thread × 0.484" Installed Lg. (10 Each) M10×1.5 mm Thread × 0.516" Installed Lg. (10 Each) M12×1.75 mm Thread × 0.656" Installed Lg. (6 Each) | 36 | 3/8"-16 1/2"-13 9/16"-12 3/4"-10 | __ | 5/16" 27/64" 31/64" 21/32" | 5/16" 27/64" 31/64" 21/32" | Slotted | 000000000 | 00000 |
| M8×1.25 mm Thread × 12.5 mm Installed Lg. (10 Each) M10×1.5 mm Thread × 17 mm Installed Lg. (10 Each) M12×1.75 mm Thread × 17 mm Installed Lg. (8 Each) M16×2 mm Thread × 20 mm Installed Lg. (5 Each) | 33 | M12 M16 M24 | 1.75 2 3 | 10.4 mm 14 mm 21 mm | 10.4mm 14mm 21mm | Slotted | 000000000 | 000000 |
Installation Bits
For fast installation, use these installation bits with power drills and drill presses.
| For Thread Size | Hex Shank Size | Each | |
| 4-40, 6-32, M3 | 1/4" | 000000000 | 00000 |
| 8-32, 10-24, 10-32, M4 | 1/4" | 000000000 | 0000 |
| 10-24, 10-32, 1/4"-20, 1/4"-28, M5 | 1/4" | 000000000 | 0000 |
| 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, M6 | 1/4" | 000000000 | 0000 |
| 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, M8 | 1/4" | 000000000 | 0000 |
| 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, M10 | 3/8" | 000000000 | 0000 |
| 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M12 | 3/8" | 000000000 | 0000 |
| 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, M14 | 3/8" | 000000000 | 00000 |
| 5/8"-11, 5/8"-18, M16 | 3/8" | 000000000 | 00000 |
| 3/4"-10, 3/4"-16 | 3/8" | 000000000 | 00000 |
| 1"-8, 1"-14 | 3/8" | 000000000 | 00000 |
Easy-to-Install Thread-Locking Inserts with Installation Tools
A closed-end tap, drill bit, and installation bit are included with these inserts. Also known as E-Z Lok, they use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. A black-phosphate finish provides mild corrosion resistance.
Inserts with a thin wall are often used in small holes or near the edge of a workpiece.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
Inch
| Thread Size | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | No. of Inserts Included | Each | |
Black-Phosphate Steel with Thin Wall | ||||||||
|---|---|---|---|---|---|---|---|---|
| 10-32 | 5/16"-18 | 0.312" | I | 0.272" | Slotted | 10 | 000000000 | 000000 |
| 1/4"-20 | 3/8"-16 | 3/8" | Q | 0.332" | Slotted | 10 | 000000000 | 00000 |
| 5/16"-18 | 7/16"-14 | 0.437" | X | 0.397" | Slotted | 10 | 000000000 | 00000 |
| 3/8"-16 | 1/2"-13 | 1/2" | 29/64" | 29/64" | Slotted | 10 | 000000000 | 00000 |
| 1/2"-13 | 5/8"-11 | 5/8" | 37/64" | 37/64" | Slotted | 10 | 000000000 | 000000 |
Black-Phosphate Steel with Thick Wall | ||||||||
| 8-32 | 5/16"-18 | 0.29" | F | 0.257" | Slotted | 10 | 000000000 | 00000 |
| 10-32 | 3/8"-16 | 0.406" | 5/16" | 5/16" | Slotted | 10 | 000000000 | 00000 |
| 1/4"-20 | 7/16"-14 | 0.437" | 23/64" | 23/64" | Slotted | 10 | 000000000 | 00000 |
| 5/16"-18 | 1/2"-13 | 0.484" | 27/64" | 27/64" | Slotted | 10 | 000000000 | 00000 |
| 3/8"-16 | 9/16"-12 | 0.515" | 31/64" | 31/64" | Slotted | 10 | 000000000 | 00000 |
| 1/2"-13 | 3/4"-10 | 0.656" | 21/32" | 21/32" | Slotted | 10 | 000000000 | 00000 |
Metric
For Tap | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Thread Pitch, mm | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | No. of Inserts Included | Each | |
Black-Phosphate Steel with Thin Wall | ||||||||||
| M6 | 1 | 3/8"-16 | __ | 3/8" | Q | 0.332" | Slotted | 10 | 000000000 | 000000 |
Black-Phosphate Steel with Thick Wall | ||||||||||
| M4 | 0.7 | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 10 | 000000000 | 00000 |
| M5 | 0.8 | M8 | 1.25 | 7.5mm | 6.9 mm | 6.9mm | Slotted | 10 | 000000000 | 00000 |
| M6 | 1 | M10 | 1.5 | 10.5mm | 8.6 mm | 8.6mm | Slotted | 10 | 000000000 | 00000 |
| M8 | 1.25 | M12 | 1.75 | 12.5mm | 10.4 mm | 10.4mm | Slotted | 10 | 000000000 | 00000 |
Screw-Locking Easy-to-Install Thread-Locking Inserts
Installation Bit
Adhesive on both the internal and external threads keeps these inserts in place and holds screws tight. Also known as E-Z Lok, they use Loctite® that reaches full strength after 72 hours. A black-phosphate finish provides mild corrosion resistance. All have thick walls for strength and can be used to fill a large hole with stripped threads. Installation requires a drill bit and a standard tap. Then set the insert with an installation bit, a slotted screwdriver, or a bolt with two nuts.
For technical drawings and 3-D models, click on a part number.
Inserts | Installation Bits | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | Each | Each | ||
Black-Phosphate Steel with Thick Wall | |||||||||
| 10-24 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 000000000 | 00000 | 000000000 | 00000 |
| 10-32 | 3/8"-16 | 13/32" | 5/16" | 5/16" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 1/4"-20 | 7/16"-14 | 7/16" | 23/64" | 23/64" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 5/16"-18 | 1/2"-13 | 31/64" | 27/64" | 27/64" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 3/8"-16 | 9/16"-12 | 33/64" | 31/64" | 31/64" | Slotted | 000000000 | 0000 | 000000000 | 0000 |
| 1/2"-13 | 3/4"-10 | 21/32" | 21/32" | 21/32" | Slotted | 000000000 | 0000 | 000000000 | 00000 |
Installation Bits for Slotted-Drive Inserts
Installation Bit
For fast installation, use these installation bits with power drills and drill presses.
For technical drawings and 3-D models, click on a part number.
| For Thread Size | Hex Shank Size | Each | |
| 4-40, 6-32, M3 | 1/4" | 000000000 | 00000 |
| 6-32, 8-32, M3 | 1/4" | 000000000 | 0000 |
| 8-32, 10-24, 10-32, M4 | 1/4" | 000000000 | 0000 |
| 10-24, 10-32, 1/4"-20, 1/4"-28, M5 | 1/4" | 000000000 | 0000 |
| 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, M6 | 1/4" | 000000000 | 0000 |
| 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, M8 | 1/4" | 000000000 | 0000 |
| 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, M10 | 3/8" | 000000000 | 0000 |
| 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M12 | 3/8" | 000000000 | 0000 |
| 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, M14 | 3/8" | 000000000 | 00000 |
| 5/8"-11, 5/8"-18, M16 | 3/8" | 000000000 | 00000 |
| 3/4"-10, 3/4"-16 | 3/8" | 000000000 | 00000 |
| 7/8"-9, 7/8"-14 | 3/8" | 000000000 | 00000 |
| 1"-8, 1"-14 | 3/8" | 000000000 | 00000 |
| M20, M24 | 3/8" | 000000000 | 00000 |