4-40 Locknuts | McMaster-Carr

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System of Measurement

Nut Type

Material

Grade 5 Titanium

Stainless Steel

Locking Type

Distorted Thread

Hex Nut Profile

Height

Width

Finish

Black Zinc Plated

Cadmium Yellow-Chromate Plated

Thread Type

Performance

Corrosion Resistant

High Temperature

Vibration Resistant

Washer Material

400 Series Stainless Steel

Specifications Met

Thread Direction

Military Specification

Thread Fit

Unified Standard Class 2B

Unified Standard Class 3B

Flange Diameter

Sold As

Thread Spacing

Certification

RoHS

Compliant with Exemptions

Fastener Strength Rating

DFARS Specialty Metals

Washer Type

REACH

Export Control Classification Number (ECCN)

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34 Products

Fastening and Joining

Locknuts

Hold fasteners in place to prevent loosening from vibration

Flange Nuts

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

Cap Nuts

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

Press-Fit Nuts

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

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