NPT Inserts | McMaster-Carr

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144 Products

Fastening and Joining

Stainless Steel Helical Inserts

Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool.

Installation Tools for Helical Inserts

Screw an insert onto these tools and drive them a quarter to half-turn below the material's surface. They're compatible with helical inserts that have a prong.

High-Performance Threading Carbide Inserts

Install these inserts into a compatible holder to cut external or internal threads on a workpiece.

Caps

Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.

Tapered Caps

These flexible plastic caps are tapered to fit a variety of unthreaded and threaded objects.

High-Temperature Tapered Caps

Made of silicone, these caps withstand temperatures of 450° F for electroplating, paint-baking, and powder-coating applications. All of these flexible caps are tapered to fit a variety of unthreaded and threaded objects.

Squeeze Top Caps

Squeeze the dome top to remove these caps. They're commonly used as thread protectors.

Tear-Tab Caps

Push these caps onto pipe and fittings, then tear their tab to break the seal for easy removal.

Plugs

High-Temperature Round Plugs for NPT Pipe

These plugs withstand temperatures up to 600° F to protect internally threaded NPT connections from contaminants during electropainting, paint baking, and powder coating applications.

Threaded Round Plugs for NPT Pipe

Protect internally threaded NPT connections from contaminants during fabrication and storage.

Round Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes.

Hollow Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters.

Pull-Ring Tapered Plugs

Pull the two built-in rings to quickly remove these plugs. All are tapered to fit a range of hole diameters.

Hollow High-Temperature Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters. Good for electroplating, paint baking, and powder-coating applications, they withstand temperatures up to 450° F.

Strut Channel Nuts with Hollow Studs

Run wires through the hollow stud of these nuts or use them as vents.