When seating force and cup-point bite are the priority, the 8-32 x 5/8 Cup Point Alloy Steel Socket Set Screw with Nylon Insert is the industrial alloy choice. The cup rim seats against the mating surface, while the nylon insert develops prevailing torque in the female thread.

Pulley and sheave shafts can use this style when an internal hex drive and locking thread feature are both specified. Confirm thread size, length, hex key size, cup point geometry, pellet diameter, and pellet location before substituting another set screw.

Cold Headers has supplied specialty socket fasteners since 1962 and helps buyers identify exact thread and length combinations. Cold Headers installs the locking pellet in-house, which helps with uncommon lengths and specialty nylon-insert requirements. For one-time settings where a nylon pellet is not needed, compare plain Cup Point Alloy Steel Socket Set Screws.

Technical Highlights

• Point: Cup (approximately 0.55-0.62 x nominal diameter)
• Material: Alloy Steel
• Thread Size: 8-32
• Length: 5/8 in.
• Drive: Internal Hex
• Hex Key Size: 5/64 in.
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 3/32 in.
• Nylon Insert Location (N): 9/64 in., +/-1/2 pitch
• Dimensional Standard: ASME B18.3

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