Selected for shaft-mounted and adjustment applications, 4-40 x 1/4 18-8 Stainless Steel Cup Point Socket Set Screw uses a cup point end form to concentrate contact at the screw tip.

Typical use cases include couplings, knobs, and handles, especially where the screw must sit inside a tapped part. The internal hex drive keeps installation access compact while the headless body remains contained within the mating part.

For purchasing and replacement work, confirm the 4-40 thread, 1/4 in. length, socket size, and cup point diameter match the drawing or installed part. Confirm that point contact, material, and service conditions fit the application. Use it where the assembly calls for a general-purpose stainless set screw rather than carbon or specialty material. The cup point creates rim-focused contact that may help resist relative movement when the screw, mating material, and installation conditions are appropriate. Cold Headers supports exact-size sourcing for stainless socket set screws, including uncommon lengths and replacement requirements.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 4-40
• Length: 1/4 in.
• Point Style: Cup Point
• Nominal Screw Diameter: 0.112 in.
• Hex Socket Size: 0.050 in.
• Cup Point Diameter: 0.051-0.061 in.
• Drive Type: Internal Hex

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