Specify 5/16-18 x 2 3/4 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 plant utilities, conveyor guards, and pump-area components. 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: 5/16-18
• Length: 2 3/4 in.
• Head Style: Hex
• Drive: External Hex (wrench or socket driven)
• 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.