UNEF Thread Hex Head Screws | McMaster-Carr

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System of Measurement

Thread Size

Length

Threading

Partially Threaded

Fastener Head Type

Thread Spacing

Material

18-8 Stainless Steel

Fastener Strength Grade/Class

Head Width

Drive Style

Thread Type

Finish

Zinc Yellow-Chromate Plated

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Head Height

Hardness

Head Diameter

Specifications Met

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Tip Type

Socket Head Profile

Thread Direction

DFARS Specialty Metals

Rounded Head Style

RoHS

Export Control Classification Number (ECCN)

REACH

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36 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Socket Head Screws

Socket Head Screws

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

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