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Specify 1/2-20 x 1/2 18-8 Stainless Steel Hex Head Cap Screw when thread, length, material, and external hex drive must match an existing bill of materials. 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 pump bases, flanges, and plant-service hardware. 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 has supplied specialty fasteners since 1962 and supports exact-size sourcing for hard-to-find industrial hardware.

Technical Highlights

  • Material: 18-8 Stainless Steel
  • Thread Size: 1/2-20
  • Length: 1/2 in.
  • Head Style: Hex
  • Drive: External Hex (wrench or socket driven)
  • Width Across Flats: 0.736-0.750 in.
  • Wrench Size: 3/4 in.
  • Head Height: 0.302-0.323 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 1/2-20

Length

 N/A 1/2 in

Maximum Width Across the Flats

 N/A 0.750 in

Minimum Width Across the Flats

 N/A 0.736 in

Maximum Width Across Corners

 N/A 0.866 in

Minimum Width Across Corners

 N/A 0.840 in

Maximum Head Height

 N/A 0.323 in

Minimum Head Height

 N/A 0.302 in

Material

 N/A 18-8 Stainless Steel

Quantity

 N/A 50

Package Type

 N/A Box

Search

 N/A SSHHCMS.1/2-20.1/2

Note

Note

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