1/4"-28 Socket Head Cap Screws | McMaster-Carr

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System of Measurement

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Material

Stainless Steel

Fastener Head Type

Threading

Partially Threaded

Socket Head Profile

Finish

Zinc Flake Coated

Drive Style

Tamper-Resistant Hex

Tamper-Resistant Torx

Specifications Met

Fed. Spec. FF-S-86

Tensile Strength

Less than 100,000 psi

100,000 psi to 119,999 psi

120,000 psi to 129,999 psi

130,000 psi to 149,999 psi

150,000 psi or greater

Thread Type

Head Diameter

Thread Spacing

Drive Size

Head Height

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Thread Direction

DFARS Specialty Metals

Military Specification

Tip Type

RoHS

Compliant with Exemptions

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

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

Tamper Resistant

Vibration Resistant

REACH

Export Control Classification Number (ECCN)

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306 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

Low-Profile Stainless Steel Socket Head Screws

Corrosion resistant with a shorter head that won't snag on components

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

Steel Torx Plus Socket Head Screws

Steel Torx Plus Socket Head Screws

Repeatedly tighten without stripping the socket

Plastic Socket Head Screws

Plastic Socket Head Screws

Secure parts without adding much weight

Aluminum Socket Head Screws

Aluminum Socket Head Screws

One-third the weight of steel

Sealing Thread-Locking Socket Head Screws

Sealing Thread-Locking Socket Head Screws

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

Steel Wire-Locking Socket Head Screws

Steel Wire-Locking Socket Head Screws

Our most vibration-resistant socket head screws

Stainless Steel Thread-Locking Socket Head Screws

Stainless Steel Thread-Locking Socket Head Screws

Corrosion resistant with a bonded nylon patch so you don't have to add threadlocker yourself

Sealing Socket Head Screws

Sealing Socket Head Screws

Keep out dust and contaminants and lock in air and fluid

Other Products

Rounded Head Screws

Rounded Head Screws

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

Flat Head Screws

Flat Head Screws

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

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.)