4-40 x 7/8 1960 Series 18-8 Stainless Steel Socket Head Cap Screw with Nylon Insert is selected when stainless hardware and thread-friction locking are needed in the same fastener. The insert is positioned in the threaded body so the screw can develop prevailing torque during engagement.
In outdoor control enclosures, panel hardware, or instrument mounting brackets, the internal hex drive keeps installation compact while the insert adds thread-friction locking action. 18-8 stainless is a practical choice for ordinary moisture exposure, washdown-adjacent machinery, and equipment where a clean stainless finish is specified.
For rounded exposed heads with the same locking concept, review 18-8 Button Head Socket Cap Screws with Nylon Insert. Cold Headers supports industrial maintenance and OEM sourcing teams when difficult-to-find stainless socket products are specified.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
