1/4-28 x 2 1/2 Cup Point Alloy Steel Socket Set Screw with Nylon Insert fits headless set screw applications where a nylon insert is specified for prevailing torque. That pairing helps the screw resist loosening through friction without replacing the mechanical holding role of the cup point.

Tooling fixtures and production stops may use this part when adjustment must remain compact and accessible from a hex socket. Confirm thread size, length, hex key size, cup point geometry, pellet diameter, and pellet location before substituting another set screw.

Cold Headers supports distributors, maintenance crews, and OEM buyers with carefully identified nylon-insert set screw sizes. Cone, flat, oval, and half dog point alloy socket set screws with nylon insert use the same locking concept with different point geometry.

Technical Highlights

• Point: Cup (approximately 0.55-0.62 x nominal diameter)
• Material: Alloy Steel
• Thread Size: 1/4-28
• Length: 2 1/2 in.
• Drive: Internal Hex
• Hex Key Size: 1/8 in.
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 7/64 in.
• Nylon Insert Location (N): 3/16 in., +/-1/2 pitch
• Dimensional Standard: ASME B18.3

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