5/16"-24 Socket Head Cap Screws | McMaster-Carr

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Stainless Steel

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Partially Threaded

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Tensile Strength

50,000 psi to 69,999 psi

70,000 psi to 99,999 psi

100,000 psi or greater

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Unified Standard Class 3A

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Chemical Resistant

Corrosion Resistant

Vibration Resistant

DFARS Specialty Metals

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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179 Products

Socket Head Screws

Steel Socket Head Screws

Steel Socket Head Screws

The standard for high-strength fastening

Stainless Steel Socket Head Screws

Stainless Steel Socket Head Screws

Won't rust or corrode when exposed to moisture and chemicals

Low-Profile Steel Socket Head Screws

The shorter head won't snag on components

Steel Torx Plus Socket Head Screws

Steel Torx Plus Socket Head Screws

Repeatedly tighten without stripping the socket

Steel Thread-Locking Socket Head Screws

Steel Thread-Locking Socket Head Screws

Lock parts in place on vibrating machinery without having to add threadlocker yourself

Sealing Socket Head Screws

Sealing Socket Head Screws

Keep out dust and contaminants and lock in air and fluid

Steel Wire-Locking Socket Head Screws

Steel Wire-Locking Socket Head Screws

Our most vibration-resistant socket head screws

Sealing Thread-Locking Socket Head Screws

Sealing Thread-Locking Socket Head Screws

Seal out contaminants and lock in air and fluid in vibrating systems

Other Products

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

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

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