Round-Base Nuts | McMaster-Carr

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System of Measurement

Thread Size

Nut Type

Material

Thread Direction

Base Diameter

Thread Type

Metric Rounded Trapezoidal

Height

Tube OD

Barrel Height

Thread Spacing

Thread Pitch

Length

For Tube Wall Thickness

Component

Width

Thread Fit

Metric Trapezoidal Class 7H

Unified Standard Class 1B

Unified Standard Class 2B

End Type

Finish

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Threading

Head Diameter

641 Products

Fastening and Joining

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

25 products

Weld Nuts

Weld to metal surfaces to add permanent threads

237 products

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

8 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

120 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

145 products

Power Transmission

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

60 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

11 products

Lead Screw Nuts

Mate with lead screws to move components in a straight line

33 products

Fabricating and Machining

Clamping Screw Nuts

Combine with other coil-thread components to build a fast-threading clamping assembly

2 products