Value Collection 101025PR Set Screw 1-72 X 1/8 Cup Point

Product Description

The VALUE COLLECTION 101025PR is a cup point set screw designed for precision fastening applications where a headless profile is required. Manufactured from Grade 8 alloy steel, this screw delivers the high tensile strength needed in demanding mechanical assemblies. The 1-72 thread (UNF) and 1/8-inch overall length make it suited for small-bore, tight-tolerance work. A hex socket drive requires a 0.028-inch hex key for installation. Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards. Installed by machinists, maintenance technicians, and mechanical assemblers in industrial and precision equipment environments.

This set screw is used in applications where a shaft, collar, gear, pulley, or similar component must be secured within a bore without a protruding head. The cup point digs into the mating surface to resist rotation and axial movement under load. Typical installations include motor shafts, shaft collars, and set-screw-style couplings in both light industrial and precision instrument contexts. The 1-72 UNF thread pitch is common in miniature and instrument-grade assemblies where fine thread engagement is critical.

Key Features

• Cup point geometry bites into mating surface to resist shaft rotation and axial slippage
• Grade 8 alloy steel construction provides high tensile and torsional strength
• 1-72 UNF thread for fine-pitch, miniature fastening applications
• Hex socket drive (0.028-inch hex key) for installation in confined spaces
• Meets ASME/ANSI B18.3 and ASTM F912 standards for dimensional and material compliance
• Headless design sits flush or below surface for zero protrusion

Compatibility

Designed as an OEM-style replacement or direct-use set screw for miniature mechanical assemblies requiring a 1-72 UNF thread, 1/8-inch overall length, and cup point contact geometry.

Installation Notes

Installation requires a 0.028-inch hex key; use of an improperly sized key risks rounding the socket drive. Always clean and degrease mating surfaces before installation when a locking hold is required. Torque to the fastener manufacturer specifications for the thread size and grade being used. Follow applicable machinery safety lockout/tagout procedures before servicing any assembly that contains this fastener.