Value Collection 701302PR Button Socket Cap Screw 2-56

Product Description

The VALUE COLLECTION 701302PR is a button socket cap screw designed for precision fastening applications where a low-profile head is required. Manufactured from alloy steel with a black oxide coating, this screw measures 2-56 thread size with a 5/16-inch length under the head. It is fully threaded and driven by a hex socket, making it suitable for tight-clearance assemblies where a standard cap head would interfere. The black oxide finish provides mild corrosion resistance and reduces light reflection in finished assemblies. This fastener meets ANSI/ASME B18.3 and ASTM F835 standards and carries a 3A thread fit class for reliable, precise thread engagement.

This screw is used in light mechanical assemblies, electronics enclosures, instrumentation panels, and precision machine components where a flush or near-flush fastener profile is necessary. The fine 2-56 UNC thread and right-hand direction make it a standard choice for small-component assembly work performed by machinists, maintenance technicians, and assembly professionals working with compact or miniaturized hardware.

Key Features

• Button head profile for low-clearance and flush-mount fastening applications
• Hex socket drive for high torque transfer in confined spaces
• Alloy steel construction with 36-43 HRC hardness for strength and durability
• Black oxide coating for mild corrosion resistance and reduced light reflection
• Fully threaded 2-56 UNC right-hand thread with 3A fit class for precise engagement
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 2-56 UNC button socket cap screw suitable for use in precision mechanical assemblies, electronics enclosures, and instrumentation hardware requiring a low-profile alloy steel fastener.

Installation Notes

Installation is performed with a correctly sized hex key or Allen driver matched to the socket head to prevent cam-out or socket damage. Ensure mating threads are clean and free of debris before driving. Do not overtighten in aluminum or plastic substrates, as the alloy steel screw will exceed the shear strength of softer base materials. Follow applicable torque guidelines for the 2-56 thread class per the relevant ASME or application standard.