Box Nuts | McMaster-Carr

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System of Measurement

Thread Size

Nut Type

Material

Width

Height

Finish

Hot-Dipped Galvanized

Panel Thickness

Thread Type

Thread Pitch

Thread Direction

Right Hand and Left Hand

Length

Thread Spacing

Weld Nut Shape

Component

RoHS

Compliant with Exemptions

Not Compliant

Fastener Strength Grade/Class

REACH

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

Thread Fit

Metric Trapezoidal Class 7H

Unified Standard Class 2B

Clip-On Nut Type

With Floating Square Nut

With Square Nut

Fastener Strength Rating

Square Hole Size

Specifications Met

369 Products

Fastening and Joining

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

79 products

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

9 products

Weld Nuts

Weld to metal surfaces to add permanent threads

58 products

Square Nuts

Flat sides won’t spin in channels and square holes

160 products

Power Transmission

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

16 products

Precision Lead Screws

Pair with precision lead screw nuts for accurate starts and stops in your assembly

4 products

Lead Screw Nuts

Mate with lead screws to move components in a straight line

28 products

Linear Drive Nuts

Create a linear positioning system on a rotary shaft without a lead screw

3 products

Building and Machinery Hardware

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

12 products