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.
