M18 Nuts | McMaster-Carr

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System of Measurement

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Hex Nut Profile

Material

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Height

Thread Spacing

Fastener Strength Grade/Class

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Zinc Yellow-Chromate Plated

Thread Direction

Thread Type

Locking Type

Specifications Met

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Panel Nut Shape

Face Style

Fastener Strength Rating

DFARS Specialty Metals

Compliant

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Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

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

Performance

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