2-56 Nuts | McMaster-Carr

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System of Measurement

Thread Size

4-40 to 5/16"-32

Material

Grade 2 Titanium

Stainless Steel

Nut Type

Width

Hex Nut Profile

Height

Finish

Cadmium Yellow-Chromate Plated

Dry Film Lubricated

Phosphate Coated

Zinc Yellow-Chromate Plated

Thread Type

Locking Type

Distorted Thread

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

Seize Resistant

Vibration Resistant

Thread Spacing

Specifications Met

Federal Specification

Thread Direction

Length

Certification

RoHS

Compliant with Exemptions

Flange Diameter

Military Specification

MIL-DTL-45932/1

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

DFARS Specialty Metals

Drive Style

External Square

Press-Fit Head Shape

Export Control Classification Number (ECCN)

PEM® Part Number

REACH

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530 Products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Flange Nuts

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

Square Nuts

Flat sides won’t spin in channels and square holes

Cap Nuts

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

Coupling Nuts

Connect and extend threaded rods

Easy to tighten and loosen by hand for making frequent adjustments

Press-Fit Nuts

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

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Push Nuts

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

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Press-Fit Nut Installation Tools

Press-Fit Nut Installation Tools

Everything you need to install press-fit nuts by hand

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)