M18 Nuts | McMaster-Carr

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System of Measurement

Thread Size

Thread Pitch

Nut Type

Hex Nut Profile

Material

Width

Height

Fastener Strength Grade/Class

Thread Spacing

Thread Direction

Finish

Zinc Yellow-Chromate Plated

Thread Type

Locking Type

Specifications Met

Panel Nut Shape

Thread Fit

Face Style

Fastener Strength Rating

Performance

REACH

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

EAR99

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

Yes

RoHS

Compliant

Compliant with Exemptions

Flange Diameter

114 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

43 products

Panel Nuts

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

1 product

Locknuts

Hold fasteners in place to prevent loosening from vibration

20 products

Flange Nuts

The flange distributes pressure, so you don't need a washer

3 products

Cap Nuts

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

1 product

Coupling Nuts

Connect and extend threaded rods

6 products

Socket Nuts

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

1 product

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

1 product

Threaded Inserts

Create new threads or repair stripped threads

26 products

Power Transmission

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

5 products

Fabricating and Machining

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

3 products

Building and Machinery Hardware

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

2 products

Material Handling

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

2 products