Value Collection 581267PR Hex Socket Cap Screw 8-32 Unc

Product Description

The VALUE COLLECTION 581267PR is a partially threaded hex socket cap screw designed for precision fastening in mechanical assemblies, machine building, and industrial maintenance applications. It features an 8-32 UNC thread with a 4-inch length under the head, driven by a 9/64-inch hex socket key. Constructed from alloy steel with a black oxide coating, this screw offers solid tensile strength and mild corrosion resistance. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it a reliable choice for load-bearing and close-tolerance fastening tasks encountered by millwrights, machinists, and maintenance mechanics.

This cap screw is suited for general industrial and mechanical applications where a socket drive provides torque access in confined spaces. The black oxide finish is commonly used in tooling fixtures, machine frames, enclosures, and low-moisture interior environments. Partial threading allows for clamping force without thread engagement through the full grip length, which is appropriate for applications requiring a precise clamping zone.

Key Features

• 8-32 UNC thread size for fine machine-thread fastening
• 4-inch length under head with partial threading for controlled clamp zone
• 9/64-inch hex socket drive for use with standard Allen keys or hex drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide coating provides mild corrosion resistance and reduced surface reflectivity
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for machine assemblies, fixtures, and equipment requiring an 8-32 UNC partially threaded fastener.

Installation Notes

Installation requires a 9/64-inch hex key or socket driver. Ensure mating threaded holes are clean, properly tapped to 8-32 UNC, and free of debris before installation. Power down and de-energize any equipment before fastener service. Apply consistent torque within the limits appropriate for alloy steel at this thread size; consult ASME torque tables or a fastener reference guide for your specific joint design.