How to Install Helical Inserts
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About Helical Insert Length
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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.
Inserts | Through-Hole Taps | Installation Tools | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | Each | |||
18-8 Stainless Steel—Right-Hand Threaded | ||||||||||
| 1/8 | 0.188" | 25/64" | 25/64" | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/4 | 3/8" | 17/32" | 17/32" | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 3/8 | 0.562" | 43/64'' | 43/64" | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
| 1/2 | 3/4" | 27/32" | 27/32" | 1 | 000000000 | 0000 | 000000000 | 00000 | 000000000 | 00000 |
Inserts | Through-Hole Taps | Installation Tools | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | Each | |||
18-8 Stainless Steel—Right-Hand Threaded | ||||||||||
| 1/8 | 0.273" | W | 0.386" | 5 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 0000000 |
| 1/4 | 0.394" | 33/64" | 33/64" | 5 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 |
| 3/8 | 0.407" | 21/32" | 21/32" | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 |
| 1/2 | 0.534" | 13/16" | 13/16" | 1 | 000000000 | 0000 | 000000000 | 000000 | 000000000 | 000000 |
Helical Inserts with Installation Tools
Inserts come with a through-hole tap and installation tool. 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.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 0.273" | 3/8" | 3/8" | 12 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 0000000 |
| 1/4 | 0.394" | 33/64" | 33/64" | 12 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 000000 |
| 3/8 | 0.407" | 21/32" | 21/32" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 000000 |
| 1/2 | 0.534" | 13/16" | 13/16" | 10 | Drill Bit, Through-Hole Tap, Installation Tool | 000000000 | 000000 |