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1/4-28 x 5/16 18-8 Stainless Steel Low Head Socket Cap Screw supports compact equipment layouts that call for a low-profile socket screw in 18-8 stainless steel.

The low head geometry gives this 1/4-28 x 5/16 fastener a reduced profile for instrumentation and precision machinery, where the clean stainless appearance and compact head style support equipment where clearance and access both matter. It may also be specified for machine guards and access panels, where the reduced head profile helps prevent interference around removable covers and moving components.

18-8 stainless steel is a general-purpose stainless choice for indoor equipment, many outdoor installations, and assemblies where a clean appearance is important.

Cold Headers has supplied specialty socket fasteners since 1962, helping purchasing teams source exact sizes for industrial maintenance and production work.

Use the verified dimensions below to compare nominal body diameter, head diameter, head height, hex socket size, and key engagement against the available space in the assembly.

Technical Highlights

  • Material: 18-8 Stainless Steel
  • Thread Size: 1/4-28
  • Length: 5/16 in.
  • Nominal Body Diameter: 0.2500 in.
  • Head Diameter: 0.369-0.375 in.
  • Head Height: 0.121-0.125 in.
  • Hex Socket Size: 0.1250 in.
  • Minimum Key Engagement: 0.094 in.
  • Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

Unit of Measure

Specifications

Brands

N/A Cold Headers, Inc.

Diameter

N/A 1/4-28

Length

N/A 5/16 in

Material

N/A 18-8 Stainless Steel

Quantity

N/A 100

Package Type

N/A Box

Basic Screw Diameter

N/A 0.2500 in

Maximum Head Diameter

N/A 0.375 in

Minimum Head Diameter

N/A 0.369 in

Maximum Head Height

N/A 0.125 in

Minimum Head Height

N/A 0.121 in

Hex Socket Size

N/A 1/8 in

Minimum Key Engagement

N/A 0.094 in

Search

N/A SSLHSCS.1/4-28.5/16

Note

Note

N/A Less Than Package Quantity Specified Plus 25%.