4-40 x 3/8 is specified for dry-service set-screw work where the screw must hold adjustment while reducing direct steel-on-part contact.

Typical uses include semiconductor tooling, electronics fixtures, and light mechanical assemblies with finished contact surfaces. The internal socket drive keeps installation compact and leaves no external head projecting from the assembly. Nylon is the softer contact choice for delicate finishes and repeated adjustment.

Cold Headers keeps alloy tipped set screws organized by thread, length, and tip material so the correct replacement can be found quickly. For maximum bite instead of surface protection, the related cup point alloy set screw family is the better comparison.

Technical Highlights

• Point: Nylon tip (soft contact face)
• Body Material: Alloy Steel
• Tip Material: Nylon
• Thread Size: 4-40
• Thread Fit: 3A
• Length: 3/8 in. (threaded body)
• Tip Diameter (A): 1/16 in.
• Tip Length (C): 1/32 in.

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.