Value Collection 601070PR Set Screw 3-56 Cup Point Alloy Steel

Product Description

The VALUE COLLECTION 601070PR is a cup point set screw designed for secure, low-profile fastening in mechanical assemblies. Manufactured from alloy steel to ASTM F912 material grade, it features a hex drive and conforms to ASME/ANSI B18.3 dimensional standards. The screw measures 3/16 inches in overall length with a 3-56 UNF thread size, making it suited for tight-tolerance applications where a flush or recessed fastener is required. The cup point bites into the mating surface to resist rotation and axial movement without a protruding head. Installers in HVAC, electrical, and mechanical service work regularly use set screws of this type to secure pulleys, collars, and shaft-mounted components.

This set screw is used in residential and commercial mechanical applications wherever a headless, threaded fastener is needed to lock a component onto a shaft or within a bore. Common install scenarios include motor shaft collars, fan blade hubs, valve stems, and small-bore mechanical linkages. The 3-56 UNF thread is a fine-pitch designation suited for small-diameter, precision-fit assemblies. The hex drive requires a 0.050 inch hex key for installation and removal.

Key Features

• Cup point geometry bites into mating surface to resist rotation and axial displacement
• Alloy steel construction meets ASTM F912 material grade for reliable tensile and torsional strength
• Hex drive (0.050 inch key size) allows installation in recessed or confined spaces
• Conforms to ASME/ANSI B18.3 fastener standard for dimensional consistency
• 3-56 UNF fine-pitch thread for precise engagement in small-diameter tapped holes
• 3/16 inch overall length suits shallow-bore and thin-collar applications

Compatibility

Designed as a standard headless set screw for use in any tapped 3-56 UNF hole requiring a cup point fastener per ASME/ANSI B18.3.

Installation Notes

Installation is performed with a 0.050 inch hex key. Power down or de-energize any equipment before securing or removing set screws on motor shafts or rotating assemblies. Do not overtighten, as the small thread diameter is susceptible to shear under excessive torque. Follow equipment manufacturer torque guidelines and applicable mechanical codes when installing fasteners in safety-critical assemblies.