4-48 x 5/8 Cup Point Alloy Steel Socket Set Screw with Nylon Insert is the alloy version of a self-locking cup point set screw for machinery work. The cup point is selected for localized holding contact; final selection still depends on shaft material, load, and access.

Typical uses include collars and couplings on production machinery where a shaft-mounted component must stay adjusted. Confirm thread size, length, hex key size, cup point geometry, pellet diameter, and pellet location before substituting another set screw.

Since 1962, Cold Headers has helped industrial buyers source specialty socket products for repair, replacement, and production needs. 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: 4-48
• Length: 5/8 in.
• Drive: Internal Hex
• Hex Key Size: 0.050 in.
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 1/16 in.
• Nylon Insert Location (N): 3/32 in., +/-1/2 pitch
• Dimensional Standard: ASME B18.3

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