Set Inserts | McMaster-Carr

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911 Products

Threaded Inserts for Plastic

Heat-Set Inserts for Plastic

Install these inserts into plastic parts to create a secure base for fasteners.

Male Threaded Heat-Set Inserts for Plastic

With the male threaded end on these inserts, mount components directly to plastic parts.

Symmetrical Heat-Set Inserts for Plastic

Quicker to install than standard heat-set inserts, these inserts go in either way—no need to check which end is correct.

Tapered Heat-Set Inserts for Plastic

The tapered shape makes it easier to guide these inserts into a hole during installation. Use a drill bit to create a straight hole, then taper the top half.

Tapered Heat-Set Insert Assortments
for Plastic with Installation Tools

Assortments include various sizes of inserts, a soldering iron, a ceramic insulation tube, and installation tips.

Male Threaded Tapered Heat-Set Inserts for Plastic

Tapered on one end, these inserts are easy to guide into a hole during installation. The threaded rod on the other end creates an attachment point for components on plastic parts.

Heavy Duty Mold-In Inserts for Plastic

Add threads that resist twisting and pulling more than standard mold-in inserts. These inserts have a six-pointed shape and ridges that give ample surface area for contacting the plastic, so they’re strong and sturdy.

Mold-In Inserts for Plastic

Integrate strong metal threads as you make parts through injection molding. These inserts become inseparable from your parts, forming a stronger bond in plastic than heat-set inserts and press-fit inserts.

Threaded Inserts for Metal

Key-Locking Insert Assortments
with Installation Tool

Key-Locking Inserts with Installation Tool

These inserts come with an installation tool. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts.

Helical Inserts with Installation Tools

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

Helical Insert Assortments with Installation Tools

Assortments include various sizes of helical inserts and a tap, a drill bit, and an installation tool for each thread size.

Spark Plug Thread Repair Kits

Kits include helical inserts, a tap, and an installation tool.

Spark Plug Thread Repair Kits for
Gasket-Seat and Taper-Seat Ports

These kits have short-, normal-, and long-reach inserts, an installation tool, and a tap.

Easy-to-Install Thread-Locking Insert Assortments

These assortments include various sizes of thread-locking inserts.

Easy-to-Install Thread-Locking
Inserts with Installation Tools

A closed-end tap, drill bit, and installation bit are included with these inserts.

Threaded Inserts for Wood

Brass Tapping Insert Assortments for Hardwood

Assortments include various sizes of tapping inserts for hardwood.

Tapping Insert Assortments for Softwood

Assortments include various sizes of tapping inserts for softwood.

Thread-Shielding Tee Nut Inserts

Create strong threads in wood and plastic that won’t get clogged with paint or debris. These tee nut inserts have a protective plug on bottom to block out substances during finishing processes.