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This 7/8-9 x 7/8 18-8 stainless hex head cap screw is a size-specific listing for assemblies that use a nut or prepared tapped hole. 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 HVAC equipment, conveyor structures, and retrofit repairs. External hex drive is useful when a wrench or socket can reach the head from the side and a counterbore would add unnecessary machining.

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: 7/8-9
  • Length: 7/8 in.
  • Head Style: Hex
  • Drive: External Hex (wrench or socket driven)
  • Width Across Flats: 1.285-1.312 in.
  • Wrench Size: 1 5/16 in.
  • Head Height: 0.531-0.563 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 7/8-9

Length

 N/A 7/8 in

Maximum Width Across the Flats

 N/A 1.312 in

Minimum Width Across the Flats

 N/A 1.285 in

Maximum Width Across Corners

 N/A 1.516 in

Minimum Width Across Corners

 N/A 1.465 in

Maximum Head Height

 N/A 0.563 in

Minimum Head Height

 N/A 0.531 in

Material

 N/A 18-8 Stainless Steel

Package Type

 N/A Each

Search

 N/A SSHHCMS.7/8-9.7/8

Note

Note

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