Value Collection 601333PR Set Screw 1/2-13 X 3-1/2 in Cup Point

Product Description

The VALUE COLLECTION 601333PR is a 1/2-13 x 3-1/2 inch cup point set screw machined from alloy steel. Set screws are headless fasteners that thread fully into a tapped hole to secure a component — such as a collar, gear, pulley, or hub — against a shaft or mating surface. The cup point on this screw bites into the shaft material to resist rotation and axial movement. Driven by a 1/4 inch hex key, this fastener is sized for applications that require positive holding force in moderate to heavy-duty assemblies. It weighs approximately 0.01 pounds per unit.

This set screw is used in mechanical assemblies across industrial, commercial, and maintenance applications where a flush or recessed fastener is required. Typical installations include shaft collars, sprockets, couplings, and similar rotating or static components. The 1/2-13 UNC thread designation indicates a coarse thread form, which is well suited for use in steel, cast iron, and other ferrous assemblies. It conforms to ASME/ANSI B18.3 and ASTM F912 standards, making it appropriate for engineered assemblies that reference these specifications.

Key Features

• 1/2-13 UNC coarse thread for reliable engagement in ferrous and alloy components
• 3-1/2 inch overall length provides extended thread engagement for deep or through-hole applications
• Cup point geometry bites into shaft surface to resist both axial and rotational movement
• 1/4 inch hex drive accepts standard hex keys and Allen wrenches
• Alloy steel construction offers higher strength than standard carbon steel fasteners
• Meets ASME/ANSI B18.3 and ASTM F912 standards for dimensional and mechanical compliance

Compatibility

Designed as a direct-fit replacement or service fastener for any tapped 1/2-13 UNC threaded application requiring a cup point set screw at 3-1/2 inch overall length per ASME/ANSI B18.3 and ASTM F912 specifications.

Installation Notes

Set screws of this type are installed by machinists, millwrights, and maintenance technicians using a 1/4 inch hex key or Allen wrench. Always confirm the mating tapped hole is clean and free of debris before installation. De-energize and lock out any rotating equipment before installing or removing set screws from shaft assemblies. Avoid over-torquing, which can strip threads or fracture the fastener in the bore.