1/4-20 x 3/8 18-8 Stainless Steel Button Head Socket Cap Screw with Nylon Insert is a compact socket-driven fastener for joints where a separate washer or adhesive is not desired. Its insert creates thread-friction resistance to backing out under vibration without requiring a separate locking washer.

The rounded button head can reduce exposed edges, spread bearing load over a broader face, and avoid counterbore machining when the assembly accepts a raised dome. In electronics enclosures, cabinet covers, or instrument panels, the internal hex drive supports top-side installation while the rounded head reduces surface projection.

Slight magnetism from cold working can be normal for 18-8 stainless, so final selection should reflect the mating parts and environmental exposure. For higher preload potential with a deeper socket, compare 18-8 Socket Head Cap Screws with Nylon Insert. Cold Headers supports distributors, maintenance teams, and OEM sourcing work when a precise button-head nylon-insert configuration is needed.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 1/4-20
• Length: 3/8 in.
• Head Style: Button Head
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 7/64 in.
• Nylon Insert Location (N): 3/16 in. +/-1/2 pitch
• Head Dimensions: ASME B18.3

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