5/16-18 x 5/8 1960 Series 18-8 Stainless Steel Socket Head Cap Screw with Nylon Insert provides a cataloged stainless option for cap-screw joints that specify a nylon locking element. Its locking element supports service where a standard all-metal cap screw may need an added thread-locking feature.

Use it for material-handling systems, equipment guards, or panel-mounted hardware after confirming thread engagement, drive access, and the mating material. 18-8 stainless is a practical choice for ordinary moisture exposure, washdown-adjacent machinery, and equipment where a clean stainless finish is specified.

Use the exact thread, length, pellet diameter, and pellet location when matching drawings or service records. Cold Headers installs nylon inserts in-house for supported socket-cap configurations, with odd-size sourcing handled through the quote process.

Technical Highlights

• Series: 1960 Series
• Material: 18-8 Stainless Steel
• Thread Size: 5/16-18
• Length: 5/8 in.
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 1/8 in.
• Nylon Insert Location (N): 13/64 in. +/-1/2 pitch
• Head Dimensions: ASME B18.3, 1960 Series

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