Value Collection 601233PR Set Screw 1/4-28 X 7/8 in Cup Point

Product Description

The VALUE COLLECTION 601233PR is a cup point set screw designed for mechanical assemblies requiring a firm, secure hold against a shaft or mating surface. Manufactured from alloy steel to ASTM F912 and ASME/ANSI B18.3 standards, this fastener delivers reliable clamping force in high-stress applications. The 1/4-28 UNF thread provides fine thread engagement, and the 7/8-inch overall length suits moderate-depth installations. Drive interface is a 1/8-inch hex key socket. This screw is installed by machinists, millwrights, and maintenance technicians working on rotating equipment, shaft collars, pulleys, and similar mechanical components.

Cup point set screws are used across a wide range of mechanical and industrial applications where a component must be locked to a shaft without a through-bolt. Typical installations include shaft collars, sprockets, gears, couplings, and motor components. The cup point geometry bites into the shaft surface to resist both rotational and axial movement. This part is sold individually but requires a minimum order quantity of 100 units, making it suitable for shop stock, maintenance departments, and production assembly operations.

Key Features

• Cup point geometry bites into shaft material for positive rotational and axial resistance
• Alloy steel construction meets ASTM F912 material grade requirements
• Conforms to ASME/ANSI B18.3 dimensional standard for socket set screws
• 1/4-28 UNF fine thread for precise torque control and tight thread engagement
• 1/8-inch hex key drive fits standard L-keys and T-handle hex drivers
• 7/8-inch overall length suits a range of hub and collar depths

Compatibility

Designed as a standard ASME/ANSI B18.3 socket set screw suitable for any application requiring a 1/4-28 UNF cup point fastener. Compatible with any tapped hole or threaded assembly meeting the 1/4-28 UNF thread specification.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 1/8-inch hex key or Allen driver. Ensure the mating shaft or surface is clean and free of debris before seating the cup point. De-energize and lock out any equipment before installing or removing set screws on rotating assemblies in accordance with applicable OSHA lockout/tagout procedures. Do not over-drive the fastener, as the cup point can deform the shaft beyond the intended bite depth.