For shaft retention that needs both a cup point and thread locking, the 5/16-18 x 1 3/4 Cup Point Alloy Steel Socket Set Screw with Nylon Insert identifies the exact alloy size. The nylon pellet works in the thread path, so it is different from a nylon tip that is intended to contact the shaft surface.

Machine rebuilds standardized on alloy hardware can keep the same material and point style while adding a nylon insert. Confirm thread size, length, hex key size, cup point geometry, pellet diameter, and pellet location before substituting another set screw.

For unusual lengths or deeper alloy sizes, Cold Headers keeps the part defined by thread, length, point style, drive, and locking feature.

Technical Highlights

• Point: Cup (approximately 0.55-0.62 x nominal diameter)
• Material: Alloy Steel
• Thread Size: 5/16-18
• Length: 1 3/4 in.
• Drive: Internal Hex
• Hex Key Size: 5/32 in.
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 1/8 in.
• Nylon Insert Location (N): 7/32 in., +/-1/2 pitch
• Dimensional Standard: ASME B18.3

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