UNS Thread Hex Head Screws | McMaster-Carr

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System of Measurement

Thread Size

Length

Threading

Partially Threaded

Fastener Strength Grade/Class

Fastener Head Type

Thread Spacing

Material

Stainless Steel

Finish

Zinc Yellow-Chromate Plated

Head Width

Thread Type

Tip Type

Drive Style

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Thread Direction

Head Height

Hardness

REACH

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Specifications Met

DFARS Specialty Metals

RoHS

Export Control Classification Number (ECCN)

Head Diameter

Drive Size

Rounded Head Style

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127 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

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

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