Extruded U-Nuts | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Distance from Center of Hole to Edge (A) Distance from Center of Hole to Edge (A)

	For Maximum Panel Thickness For Maximum Panel Thickness

	Nut Type Nut Type


Clip On	Square

Snap In	Hex

	Clip-On Nut Profile Clip-On Nut Profile

With Barrel

Low

With Enclosed Hex Nut

With Hex Nut

With Square Nut

	Material Material

Steel

Stainless Steel

	Finish Finish

	For Minimum Panel Thickness For Minimum Panel Thickness

	For Use With For Use With

Machine Screws

Tapping Screws

	Thread Spacing Thread Spacing

Coarse

Fine

	Thread Type Thread Type

UNC

UNF

Metric

	Thread Pitch Thread Pitch

	Thread Fit Thread Fit

Class 2B

Class 3B

Class 6H

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Width Width

	For Screw Size For Screw Size

	Minimum Square Hole Size Minimum Square Hole Size

	Maximum Square Hole Size Maximum Square Hole Size

	Head Height Head Height

174 Products

About Nuts, Materials, and Finishes

No-Slip Clip-On Barrel Nuts

Also known as U-style clip on nuts, these nuts have a barrel with multiple threads for secure thread engagement.

Metric No-Slip Clip-On Barrel Nuts

These metric nuts have a barrel with multiple threads for secure thread engagement. Also known as U-style clip-on nuts.

No-Slip Clip-On Enclosed Hex Nuts

The S-style design provides more strength than other no-slip clip-on nuts.

Low-Profile No-Slip Clip-On Nuts

Use these light-duty clip-on nuts in low-clearance applications.

No-Slip Clip-On Nuts

A hex- or square-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

Clip-On Hex Nuts

A hex-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

Low-Profile Clip-On Nuts

Use these light-duty clip-on nuts in low-clearance applications.

No-Slip Clip-On Nuts for Tapping Screws

These nuts firmly clip onto the edge of panels and stay secure.

Clip-On Nuts for Tapping Screws

These nuts are often used to secure parts on electric consoles.

Snap-In Nuts

Steel Snap-In Nuts

Snap these nuts into square holes in thin materials.

Stainless Steel Snap-In Nuts

Stainless steel snap-in nuts have excellent corrosion resistance in most environments.