Pipe Thread Inserts

For economy in original design, production salvage, repair, and maintenance.

Heli-Coil pipe thread inserts are precision-formed screw thread coils of 18-8 stainless steel wire, cold-rolled into a sharp crest diamond-shaped cross section having a tensile strength in excess of 20,000 psi and a smooth surface of 8-16 micro inches.

Before installation, the pipe thread insert is larger in diameter than the tapped hole. When installed, it assumes the configuration of the tapped hole, whether NPT, ANPT, or NPSC. The outward forces resulting from the reduction of the free diameter anchors the insert permanently in place.

Features and benefits:

Provides leakproof joints when used with thread sealant and recommended torque

Eliminates thread failure due to stripping, vibration, fatigue, corrosion, or seizing

Prevents thread wear, even after repeated disassembly and reassembly

Greatly increases thread strength under all operating conditions

Yields substantial savings in material, weight, and space, as minimum size bosses and flanges are permissable

Offers speed and economy in repair and produciton salvage, providing better than original threads

Permits the use of light materials instead of ferrous castings because connections will be protected by the inserts