ASTM Cap Screws | McMaster-Carr

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Stainless Steel

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30,000 psi to 99,999 psi

100,000 psi or greater

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ASTM Grade A325

ASTM Grade A490

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Metric Class 4g6g

Metric Class 5g6g

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Unified Standard Class 3A

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6,155 Products

Fastening and Joining

Socket Head Screws

Socket Head Screws

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

Flat Head Screws

Flat Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

Hex Head Screws

Hex Head Screws

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

Square Head Screws

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

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