Value Collection 601521BR Set Screw Cup Point Alloy Steel

Product Description

The VALUE COLLECTION 601521BR is a cup point set screw designed for secure, thread-based fastening in mechanical assemblies where a flush or recessed fastener is required. This screw features a 1-8 UNC thread and an overall length of 4-1/2 inches, making it suitable for heavier clamping and holding applications. Driven by a 9/16-inch hex key, it is manufactured from alloy steel to the ASTM F912 material grade standard and conforms to ASME/ANSI B18.3 fastener specifications. Licensed machinists, millwrights, and mechanical contractors are the typical installers of this fastener type.

This set screw is used in industrial and commercial mechanical assemblies where a cup point is needed to bite into a shaft or mating surface to resist rotational or axial movement. Common applications include shaft collars, pulleys, gears, and similar power-transmission components. The cup point geometry concentrates clamping force at a small contact area, providing strong holding power without requiring a through-hole in the mating part. This screw is sold individually per package.

Key Features

• Cup point geometry for concentrated, bite-in holding force on shafts and mating surfaces
• 1-8 UNC thread standard for broad compatibility with standard tapped holes
• 4-1/2-inch overall length accommodates deeper engagement applications
• Alloy steel construction to ASTM F912 material grade for strength and durability
• 9/16-inch hex drive conforms to ASME/ANSI B18.3 specifications
• Fractional inch measurement type for standard imperial tooling and hardware

Compatibility

Designed as a standard ASME/ANSI B18.3 cup point set screw for use in any application requiring a 1-8 UNC tapped hole and a 9/16-inch hex key drive.

Installation Notes

Installation is performed by qualified machinists, millwrights, or mechanical technicians using a calibrated 9/16-inch hex key or allen wrench. Ensure the mating tapped hole is clean and free of debris before threading in the screw. De-energize and lock out any rotating equipment before installing or adjusting set screws in power-transmission components. Follow applicable ASME or facility maintenance standards for fastener torque and engagement requirements.