How to Install Helical Inserts
More
About Helical Insert Length
More
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Pkg. Qty. | Pkg. | Each | Each | Each | ||||
18-8 Stainless Steel—Right-Hand Threaded | ||||||||||||
| 1 1/4"-8 | 1 7/8" | 1 1/4" | 1 1/4" | 1 | 000000000 | 000000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 000000 |
| 1 1/2"-8 | 2 1/4" | 1 1/2" | 1 1/2" | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 |
| 1 3/4"-8 | 2 5/8" | 1 3/4" | 1 3/4" | 1 | 000000000 | 00000 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 00000 |