McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

6-32

	Thread Size Thread Size	Hide

	Thread Type Thread Type

	Threaded Insert Type Threaded Insert Type


Press Fit	Heat Set

Key Locking	Tapping

Thread Locking	Helical

Hammer In

	Material Material

	Installed Length Installed Length

	For Use In For Use In

	Drill Bit Size Drill Bit Size

	End Type End Type

Open

Closed

	For Maximum Hole Diameter For Maximum Hole Diameter

	Thread Direction Thread Direction

	Right Hand

	Thread Spacing Thread Spacing

Coarse

Fine

	Thread Fit Thread Fit

	Tensile Strength Tensile Strength

	Specifications Met Specifications Met

Mil. Spec.

NAS

	Thread Insert Style Thread Insert Style


Standard	Flanged

	For Tap Thread Size For Tap Thread Size

12-28

1/4"-20

	Nut Type Nut Type


Press Fit	Rivet

Hex	Flange

Weld	Socket Head

Square	Screw Mount

Locknut	Rivet Mount

	For Minimum Panel Thickness For Minimum Panel Thickness

	Helical Insert Style Helical Insert Style

With Prong

Without Prong

	Press-Fit Head Shape Press-Fit Head Shape


Round	Hex

	Passivation Passivation

Not Passivated

Passivated

	For Tap Type For Tap Type

165 Products

Threaded Inserts

Heat-Set Inserts for Plastic

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

Press-Fit Inserts for Plastic

Press these inserts into a drilled hole. They have knurls, fins, or barbs that provide a good grip on the material so they stay in place.

Tapping Inserts for Plastic

Also known as Trisert inserts, these cut threads into plastic and have better holding power than press-fit inserts.

Key-Locking Inserts for Soft Metal

Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Install with a standard tap.

Easy-to-Install Thread-Locking
Inserts for Metal

Also known as E-Z Lok inserts, these inserts use adhesive to keep them in place. Install with a standard tap.

Helical Inserts for Metal

Wound like springs, the coil of these inserts expands once installed to securely anchor the insert.

Tapping Inserts for Soft Metal

These inserts cut their own threads in soft metals such as aluminum, so there's no need to tap the hole. Also known as Tap-Lok inserts.

Press-Fit Inserts for Soft Metal

The knurled body holds these inserts in place in aluminum and other soft metals. Use an arbor press to install them in untapped holes.

Tapping Inserts for Wood

These inserts cut threads into wood for a stronger hold than knurled or barbed inserts.

Hammer-In Tee Nut Inserts for Wood

A wide flange distributes the load over a large area. Hammer these inserts into a drilled hole.

Other Inserts

Press-Fit Nuts

Also known as clinch nuts, press these nuts into thin materials with an arbor press or similar pressure tool.

Rivet Nuts

Also known as blind inserts, rivet nuts can be installed in thin material when you have access to only one side.

Surface-Mount Nuts

Weld, glue, or screw these nuts onto thin materials.

Socket Nuts

Also known as Allen nuts, use these nuts with socket head cap screws in recessed holes and tight spaces that don't have enough clearance for a wrench.

Rivet Studs

Add a stud to thin material when you only have access to one side.

Threaded-Stud Bumpers

Twist these bumpers into a threaded hole. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces.

Threaded Bumpers

Mount these bumpers on a threaded stud. All are reinforced with a steel core or base plate for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines.

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