Value Collection 581043PR Hex Socket Cap Screw 2-56 Unc

Product Description

The VALUE COLLECTION 581043PR is a hex socket cap screw designed for precision fastening in applications where a compact, high-strength connection is required. Machined from alloy steel with a black oxide finish, this screw carries a 2-56 UNC thread and measures 7/16 inches in length under the head. It is driven with a 5/64-inch hex key. The fully threaded shank provides maximum thread engagement across the entire fastener length. Conforming to ASME/ANSI B18.3 and ASTM A574 standards, this fastener is suited for mechanical assembly, instrument work, and light-duty structural connections where fine thread control and corrosion resistance are priorities.

This fastener is commonly used in precision mechanical assemblies, electronics enclosures, instrumentation panels, and small-component fixturing. The 2-56 UNC thread pitch is standard in applications requiring fine thread control in tight tolerances. Machinists, assembly technicians, and maintenance professionals install these screws in both production and repair settings. The black oxide coating provides mild corrosion resistance and reduces light reflection, making this screw a practical choice in controlled shop or indoor environments.

Key Features

• 2-56 UNC fully threaded shank for maximum thread engagement
• 5/64-inch hex drive for use with standard hex keys in confined spaces
• Alloy steel construction meets ASTM A574 mechanical strength requirements
• Black oxide finish provides mild corrosion resistance and low-reflectance appearance
• Conforms to ASME/ANSI B18.3 dimensional standards
• 7/16-inch length under head suits shallow-clearance fastening applications

Compatibility

Designed as a standard 2-56 UNC hex socket cap screw conforming to ASME/ANSI B18.3, suitable for use in any application that accepts this thread size and drive type.

Installation Notes

Install using a calibrated 5/64-inch hex key or ball-end driver. Ensure mating threads are clean and free of debris before driving. Avoid over-torquing, as the small thread diameter is susceptible to galling and thread damage. This fastener is intended for indoor or controlled-environment use given the mild corrosion protection offered by black oxide coating.