Value Collection 581047PR Hex Socket Cap Screw 2-56 Unc

Product Description

The VALUE COLLECTION 581047PR is a hex socket cap screw designed for precision fastening applications requiring a compact, high-strength connection. Manufactured from alloy steel with a black oxide coating, this screw delivers corrosion resistance and a clean, low-reflectance finish suited for industrial and mechanical assemblies. The 2-56 UNC thread form and 3/4 inch length under head make it a reliable choice for small-component assemblies where torque retention and dimensional accuracy are critical. It is driven by a 5/64 inch hex key and is fully threaded along its length. This fastener conforms to ASME/ANSI B18.3 and ASTM A574 standards, ensuring consistent mechanical properties across production runs.

This screw is used in light mechanical assemblies, instrumentation, electronics enclosures, and precision equipment where a small-diameter, fine-thread fastener is required. The 2-56 UNC thread is common in miniaturized hardware, PCB standoff mounting, and tight-tolerance metal components. It is appropriate for both original equipment manufacturing and MRO replacement applications. Installers typically source these in quantity lots of 100 or more due to the small size and high usage rates in production environments.

Key Features

• 2-56 UNC thread for fine-pitch, high-retention fastening in small assemblies
• Fully threaded shank maximizes thread engagement along the entire 3/4 inch length under head
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and reduces surface reflectance
• 5/64 inch hex drive allows precise torque application with standard hex key tooling
• Conforms to ASME/ANSI B18.3 dimensional standard

Compatibility

Designed as a standard 2-56 UNC hex socket cap screw for use in any application requiring an ASME/ANSI B18.3 compliant fastener of this thread size and drive type.

Installation Notes

Install using a calibrated 5/64 inch hex key or T-handle driver. Ensure mating threads are clean and free of debris before driving. Power down any equipment completely before performing fastener work on electrical enclosures or instrumentation panels. Do not over-drive; small-diameter alloy screws can be damaged by excessive torque applied with power tools without a torque-limiting clutch.