UNS Bolts | 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

Head Width

Finish

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Head Height

Thread Type

Metric Rounded Trapezoidal

Metric Trapezoidal

UN/UNF (SAE Straight)

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Drive Style

Specifications Met

Thread Direction

Head Diameter

Thread Fit

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 3A

Hardness

REACH

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

Rounded Head Style

Tip Type

Drive Size

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274 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

Tighten and loosen by hand without the need for tools

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

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