Value Collection 011421BR Hex Socket Cap Screw 5/8-11 Unc

Product Description

The VALUE COLLECTION 011421BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. Manufactured from alloy steel with a black oxide coating, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards. It features a 5/8-11 UNC thread size, a 2-1/2 inch length under head, and a 1/2 inch hex socket drive. The black oxide finish provides mild corrosion resistance and reduces light reflection in exposed installations. This screw is suited for machinists, millwrights, maintenance technicians, and industrial assembly professionals working with standard inch-series fastening systems.

This cap screw is commonly used in machine tool assembly, fixture building, equipment mounting, and general industrial fabrication where a flush or recessed fastener head is required. The partial threading allows for shank engagement across joined materials, improving clamping force in thick-stock applications. It is appropriate for both shop and field use wherever UNC inch-series socket cap screws are specified.

Key Features

• 5/8-11 UNC thread size for standard inch-series fastening
• 2-1/2 inch length under head with partial threading for improved clamping
• 1/2 inch hex socket drive for use with standard Allen or hex-key tooling
• Alloy steel construction for high tensile strength and durability
• Black oxide coating for mild corrosion resistance and reduced glare
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard inch-series socket cap screw suitable for use in any application requiring a 5/8-11 UNC partially threaded hex socket fastener conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed using a 1/2 inch hex key or Allen wrench; confirm the driver is fully seated in the socket before applying torque to avoid rounding. Always verify thread engagement depth and hole preparation meet the requirements of the applicable assembly drawing or engineering specification. De-burr and clean threaded holes before installation to ensure proper seating and accurate torque transfer. Follow applicable industry or facility standards for fastener reuse and inspection after removal.