4-40 x 1 18-8 Stainless Steel Hex Head Cap Screw is an externally driven fastener for wrench or socket installation from the side of the head. In this size range it is treated as a hex head machine screw, with the hex head driven by external tooling rather than an internal socket.
Common application reviews include washdown areas, clean-looking assemblies, and general plant environments. For washdown or outdoor general-service use, review the actual environment and avoid assuming 18-8 is appropriate for severe chloride exposure.
18-8 stainless steel is an 18% chromium and 8% nickel austenitic stainless material used for ordinary atmosphere, moisture exposure, washdown, and clean appearance. For production, repair, and distributor sourcing, Cold Headers can help confirm the exact diameter and length before quoting.
Technical Highlights
- Material: 18-8 Stainless Steel
- Thread Size: 4-40
- Length: 1 in.
- Head Style: Hex
- Drive: External Hex (wrench or socket driven)
- Width Across Flats: 1.469-1.500 in.
- Wrench Size: 1 1/2 in.
- Head Height: 0.591-0.627 in.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
