Value Collection 201003PR Button Socket Cap Screw 0-80

Product Description

The VALUE COLLECTION 201003PR is a button socket cap screw designed for precision fastening in confined or low-clearance assemblies. It features a low-profile domed button head driven by a hex socket, allowing torque application in spaces where standard cap screws will not fit. The screw is manufactured from alloy steel with a black oxide coating that provides mild corrosion resistance and a uniform matte finish. It carries an 0-80 UNF thread in a 3A fit class with a right-hand thread direction. The shank is fully threaded to the underside of the head, making it well-suited for thin-material or through-hole applications. Licensed machinists, tool-and-die technicians, and mechanical assemblers are the typical installers.

This fastener is appropriate for light-duty precision assemblies in industries such as electronics, instrumentation, optical equipment, and mechanical prototyping. The 0-80 thread size is the finest standard unified thread series at this diameter, making it a common choice in miniature mechanisms, jigs, and fixtures. It conforms to ANSI/ASME B18.3 and ASTM F835 dimensional and mechanical standards, ensuring interchangeability with other compliant hardware in the same specification family.

Key Features

• Low-profile button head reduces protrusion in flush or near-flush surface applications
• Hex socket drive provides positive torque engagement in small-diameter fasteners
• Alloy steel construction with a hardness of 36 to 43 HRC for reliable clamping load
• Black oxide finish offers mild corrosion resistance and reduces light reflection
• Fully threaded body maximizes thread engagement in thin-material fastening
• Conforms to ANSI/ASME B18.3 and ASTM F835 for dimensional and mechanical compliance

Compatibility

Designed as an OEM-style replacement or standard stock fastener for 0-80 UNF threaded applications requiring a button head profile per ANSI/ASME B18.3 and ASTM F835.

Installation Notes

Installation requires a correctly sized hex key or hex socket driver matched to the 0-80 head to avoid rounding the socket. Ensure mating tapped holes conform to UNF 3B tolerance class for proper fit. Do not exceed the torque capacity of the alloy steel shank, particularly in blind-hole or cross-threaded conditions. Always inspect threads before installation to confirm they are clean and free of debris.