4-40 x 1 1/4 1960 Series 18-8 Stainless Steel Socket Head Cap Screw with Nylon Insert fits replacement and production work where the exact stainless size and pellet feature matter. Its locking element supports service where a standard all-metal cap screw may need an added thread-locking feature.
Use it for wash-bay equipment, maintenance fixtures, or replacement assemblies after confirming thread engagement, drive access, and the mating material. Because 18-8 is not heat-treated for maximum clamp load, compare the 1960 Series Alloy Steel SHCS with Nylon Insert when joint strength is the governing requirement.
For countersunk installations, 18-8 Flat Head Socket Cap Screws with Nylon Insert keep the locking feature in a different head style. 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: 4-40
- Length: 1 1/4 in.
- Drive Type: Internal Hex
- Locking Feature: Nylon insert providing prevailing torque
- Nylon Insert Diameter (P): 1/16 in.
- Nylon Insert Location (N): 7/64 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.
