Round Nuts | McMaster-Carr

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System of Measurement

Thread Size

Material

Nut Type

Retaining Ring Type

Length

Retaining Ring Style

Height

Finish

Cadmium Yellow-Chromate Plated

Chrome Plated

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Groove Diameter

Thread Type

Metric Rounded Trapezoidal

Thread Pitch

Ring Thickness

Thread Direction

Ring OD

Width

Thumb Nut Profile

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Groove Width

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

Yes

Export Control Classification Number (ECCN)

Threading

5,123 Products

Fastening and Joining

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

256 products

Coupling Nuts

Connect and extend threaded rods

128 products

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

7 products

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

423 products

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

65 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

5 products

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

3 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

382 products

Weld Nuts

Weld to metal surfaces to add permanent threads

237 products

Screw-Mount Nuts

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

18 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

528 products

Snap-In Nuts

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

9 products

Push Nuts

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

49 products

Adhesive-Mount Nuts

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

166 products

Retaining Rings

Hold components on a shaft

2,363 products

Power Transmission

Lead Screw Nuts

Mate with lead screws to move components in a straight line

55 products

Precision Lead Screws and Nuts

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

211 products

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

18 products

Ball Screws and Nuts

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

50 products

Roller Screws and Nuts

Create more points of contact to handle much higher loads than ball screws and nuts of the same size

8 products

Electrical Power, Networking, and Controlling

Conduit Locknuts

Secure threaded conduit fittings to knockouts in outlet boxes or enclosures

119 products

Facility and Grounds Maintenance

Sink Drain Fittings

Connect tailpieces, traps, and extension tubing to drains

15 products

Building and Machinery Hardware

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

24 products