Screw Clips | 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

Low

With Barrel

With Enclosed Hex Nut

With Hex Nut

With Floating Hex Nut

With Square Nut

With Floating Square Nut

	Material Material

Steel

Stainless Steel

Plastic

	Finish Finish

	For Minimum Panel Thickness For Minimum Panel Thickness

	For Use With For Use With

Machine Screws

Tapping Screws

	For Screw Size For Screw Size

	Thread Spacing Thread Spacing

Coarse

Fine

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

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

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

RoHS Compliant

	Thread Type Thread Type

UNC

UNF

Metric

	Thread Pitch Thread Pitch

	Snap-In Nut Profile Snap-In Nut Profile

	Rectangular with Floating Nut
	Square
	Round

	Width Width

	Minimum Square Hole Size Minimum Square Hole Size

	Thread Fit Thread Fit

Class 2B

Class 3B

Class 6H

	Maximum Square Hole Size Maximum Square Hole Size

	Head Height Head Height

199 Products

About Nuts, Materials, and Finishes

Low-Profile No-Slip Clip-On Nuts

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

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.

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.

Low-Profile Clip-On Nuts

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

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.