M20 Nuts | McMaster-Carr

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System of Measurement

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Thread Pitch

Nut Type

Material

Fastener Strength Grade/Class

Height

Hex Nut Profile

Finish

Hot-Dipped Galvanized

Nickel Plated

Phosphate Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Width

Thread Spacing

Thread Direction

Thread Type

Metric Rounded Trapezoidal

Specifications Met

Locking Type

Fastener Strength Rating

Thread Fit

Metric Trapezoidal Class 7e

Metric Trapezoidal Class 7H

Metric Trapezoidal Class 8e

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Performance

REACH

RoHS

Compliant with Exemptions

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

Yes

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Color

272 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

67 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

29 products

Flange Nuts

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

15 products

Panel Nuts

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

1 product

Coupling Nuts

Connect and extend threaded rods

11 products

Cap Nuts

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

3 products

Square Nuts

Flat sides won’t spin in channels and square holes

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

33 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

1 product

Power Transmission

Bearing Nuts

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

11 products

Shock Absorber Mounting Nuts

Secure shock absorbers after threading them into mounting blocks

1 product

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

5 products

Precision Lead Screws and Nuts

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

14 products

Lead Screw Collars

Position components and limit travel along a lead screw

1 product

Ball Screws and Nuts

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

10 products

Roller Screws and Nuts

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

4 products

Electrical Power, Networking, and Controlling

Conduit Locknuts

Secure threaded conduit fittings to knockouts in outlet boxes or enclosures

4 products

Fluid Handling

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

1 product

Fabricating and Machining

T-Slot Nuts

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

8 products

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

26 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

1 product

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

17 products

Lathe Chuck Jaw Nuts

Secure jaws to a CNC lathe chuck

2 products

Material Handling

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

3 products

Building and Machinery Hardware

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

3 products