With the male threaded end on these inserts, mount components directly to plastic parts. The other end has two bands of diagonal knurls that face opposite directions to resist torque and pulling out. Heat the inserts on a hot plate, then press the knurled end into a straight hole. The heat melts the surrounding plastic, and as it cools it hardens around the knurls.

Compared to 3D printed or other plastic male threads that wear down when used over and over, these inserts are brass, which create a stronger fastening base. Brass is also corrosion resistant, nonmagnetic, and can be used as an electrical contact.

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Made from brass, these inserts are electrically conductive, nonmagnetic, and have good corrosion resistance. Press them into a drilled hole, then install a screw to expand the insert and drive the knurls into the surrounding plastic to keep it secure.

For technical drawings and 3-D models, click on a part number.

These 18-8 stainless steel inserts have good corrosion resistance and may be mildly magnetic. The hex-shaped body resists loosening and twisting in a round hole. Press into a drilled hole to install.

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70% lighter than stainless steel, these aluminum inserts are mildly corrosion resistant and nonmagnetic. The hex-shaped body resists loosening and twisting in a round hole. Press into a drilled hole to install.

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Also known as Tap-Lok inserts, these inserts cut their own threads in soft metals such as aluminum, so there’s no need to tap the hole. Install them into a drilled hole with an installation tool and a ratchet wrench. Installation tools can also be placed in the chuck on a drill press and turned by hand.

For technical drawings and 3-D models, click on a part number.

Often referred to as clinch style captive nuts, press these into a drilled or punched hole with an arbor press or similar pressure tool. Installation requires access to both sides of the panel. Knurls on the bottom of the nut hold them firmly in place. A zinc plating provides corrosion resistance in wet environments.

For technical drawings and 3-D models, click on a part number.

Made from 18-8 stainless steel, these nuts have good chemical resistance and may be mildly magnetic. Also known as clinch style captive nuts, press these into a drilled or punched hole with an arbor press or similar pressure tool. Installation requires access to both sides of the panel. Knurls on the bottom of the nut hold them firmly in place.

For technical drawings and 3-D models, click on a part number.

An offset barrel allows you to position threads near corners. Weld them to flat uncoated steel surfaces for a strong permanent hold. They can be used in channels and tight spaces where round-base weld nuts won't fit.

Zinc-plated steel weld nuts resist corrosion in wet environments.

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These studs have a wide base that distributes the load and projections that concentrate the weld. Length listed is overall length.

Choose studs with above-head projection to weld the screw directly to the surface of the material for a smoother appearance.

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Place the tip of these tools into installed inserts and push down to trigger the spring-loaded punch to break off the prong.

For technical drawings and 3-D models, click on a part number.

Place the tip of these tools into an insert and strike a light blow to the tool’s head. Then turn the tools counterclockwise with pressure to extract the insert.