When the print calls for a tipped set screw rather than a cup point, 5/16-24 x 5/16 gives buyers a nylon contact face on an alloy steel body.
Typical uses include lead screws, ball screws, racks, and adjustment stops that are reset during setup. For maximum bite instead of surface protection, the related cup point alloy set screw family is the better comparison. Nylon is the softer contact choice for delicate finishes and repeated adjustment.
Cold Headers applies nylon and brass tips in-house, which keeps the contact-face detail tied closely to the socket fastener itself. The 3A thread fit keeps the screw in the precision set-screw class while the tip changes the way the end contacts the part.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
