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Use the 5/16-18 x 2 18-8 stainless hex head cap screw when the assembly calls for side wrench access and a general-purpose bolt pattern. In this size range it is treated as a hex head cap screw, with the hex head driven by external tooling rather than an internal socket.

Common application reviews include production lines, guards, and field-installed support hardware. When the design calls for a recessed counterbored fastener or tighter tool clearance, compare 18-8 Socket Head Cap Screws.

18-8 stainless steel is an 18% chromium and 8% nickel austenitic stainless material used for ordinary atmosphere, moisture exposure, washdown, and clean appearance. Cold Headers' catalog work is strongest where the requested size, material, and application details need a careful match.

Technical Highlights

  • Material: 18-8 Stainless Steel
  • Thread Size: 5/16-18
  • Length: 2 in.
  • Head Style: Hex
  • Drive: External Hex (wrench or socket driven)
  • Width Across Flats: 2.900-3.000 in.
  • Head Height: 1.175-1.263 in.
  • Dimensional Standard: ASME B18.2.1
  • Material Standard: ASTM F593

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 5/16-18

Length

 N/A 2 in

Maximum Width Across the Flats

 N/A 3.000 in

Minimum Width Across the Flats

 N/A 2.900 in

Maximum Width Across Corners

 N/A 3.464 in

Minimum Width Across Corners

 N/A 3.306 in

Maximum Head Height

 N/A 1.263 in

Minimum Head Height

 N/A 1.175 in

Material

 N/A 18-8 Stainless Steel

Quantity

 N/A 100

Package Type

 N/A Box

Search

 N/A SSHHCMS.5/16-18.2

Note

Note

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