Value Collection 201012PR Button Socket Cap Screw 2-56

Product Description

The VALUE COLLECTION 201012PR 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 finish, this screw provides reliable corrosion resistance in moderate environments. The hex socket drive allows for high torque transfer in tight clearance areas where a standard hex head wrench cannot reach. Sized at 2-56 UNC with a 1/2 inch under-head length, it is fully threaded and carries a Thread Fit Class 3A designation, meeting ANSI/ASME B18.3 and ASTM F835 standards. This fastener is intended for use by machinists, mechanical assemblers, and maintenance technicians working with precision equipment.

This button socket cap screw is commonly used in light-duty mechanical assemblies, electronic enclosures, instrumentation panels, and machine guarding where a flush or near-flush fastener profile is preferred. The 2-56 thread size targets fine-thread applications in small mechanical components and is well suited for use in controlled manufacturing and assembly environments. The black oxide coating blends into dark-finished assemblies and reduces light reflection in optical or electronic housings.

Key Features

• Low-profile button head reduces protrusion and snag points in tight assemblies
• Hex socket drive accepts standard hex keys for high-torque installation in confined spaces
• Alloy steel construction with 36-43 HRC hardness rating for reliable mechanical strength
• Black oxide finish provides mild corrosion resistance and a non-reflective surface
• Fully threaded 2-56 UNC, Thread Fit Class 3A for precise thread engagement
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-spec fastener for applications requiring a 2-56 UNC fully threaded button socket cap screw per ANSI/ASME B18.3 and ASTM F835.

Installation Notes

Installation should be performed by a qualified machinist or mechanical assembler using a correctly sized hex key or hex socket driver. Ensure the mating threaded hole is clean and free of debris before driving the screw to avoid thread damage. Do not exceed the rated torque range for a 2-56 alloy steel fastener, and avoid over-tightening, which can strip fine threads or fracture the fastener shank. A thread-locking compound may be applied where vibration resistance is required.