Use the 4-40 x 1 1/2 18-8 stainless hex head cap screw when the assembly calls for side wrench access and a general-purpose bolt pattern. 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 brackets, supports, and removable equipment panels. Use it through a clearance hole with a nut or into a prepared tapped hole when the drawing calls for a stainless hex-head fastener.
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 serves maintenance and production needs where exact-size stainless hardware matters more than generic substitution.
Technical Highlights
- Material: 18-8 Stainless Steel
- Thread Size: 4-40
- Length: 1 1/2 in.
- Head Style: Hex
- Drive: External Hex (wrench or socket driven)
- Width Across Flats: 2.175-2.250 in.
- Head Height: 0.902-0.974 in.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
