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About Threaded Inserts
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Choose the right threaded insert for your application and learn how to install it securely.
Screw-Locking Seize-Resistant Helical Threaded Inserts
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Screws won't get stuck or come loose with these inserts. A dry film on the surface lubricates fasteners during insertion to prevent sticking and binding. Once installed, the irregularly shaped threads tightly grip screws to keep them in place under vibration. Also known as Heli-Coil inserts.
Installation requires a drill bit, a helical insert tap, and an installation tool.
Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
Dry-Film-Lubricated 18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
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. | Specs. Met | Pkg. Qty. | Pkg. | Each | Each | Each | Each | |||||||
Pronged | |||||||||||||||||
Dry-Film-Lubricated 18-8 Stainless Steel | |||||||||||||||||
| 4-40 | 0.112" | 31 Ga. | 0.120" | MS21209C0410L, NASM21209 | 5 | 91000A411 | 00000 | 91709A101 | 000000 | 91709A407 | 000000 | 90261A151 | 0000000 | 92955A103 | 0000000 | ||
