This 4-40 x 2 1/2 18-8 stainless hex head cap screw is a size-specific listing for assemblies that use a nut or prepared tapped hole. 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 production lines, guards, and field-installed support hardware. When the design calls for a recessed counterbored fastener or tighter tool clearance, compare 18-8 Socket Head Cap Screws.
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' catalog work is strongest where the requested size, material, and application details need a careful match.
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