4-40 Standoffs | McMaster-Carr

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System of Measurement

Material

Stainless Steel

Hex Size

Shape

Gender

Thread Length

Threading

Partially Threaded

OD

Hex Length

Nut Type

Finish

Zinc Yellow-Chromate Plated

Specifications Met

SAE AMS-QQ-S-763

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 1B

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Drive Style

Tensile Strength

10,000 psi to 19,999 psi

20,000 psi to 49,999 psi

50,000 psi to 99,999 psi

Width

Color

Head Diameter

Thread Type

How can we improve?

1,055 Products

Fastening and Joining

Standoffs

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

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Coupling Nuts

Connect and extend threaded rods

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Jack Screws

Secure computer cables and panels

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Adhesive-Mount Nuts

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

Weld Nuts

Weld to metal surfaces to add permanent threads

Building and Machinery Hardware

Vibration-Damping Mounts

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

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