Value Collection 701037PR Button Socket Cap Screw 5-40

Product Description

The VALUE COLLECTION 701037PR is a button socket cap screw designed for applications where a low-profile head and strong clamping force are required. Manufactured from alloy steel with a black oxide finish, this fastener delivers a hardness rating of 36-43 HRC for reliable performance in demanding assemblies. The 5-40 UNC thread with a 3A thread fit class ensures precise engagement and consistent torque transfer. It is fully threaded along its 1/2-inch length under the head and driven with a 5/64-inch hex socket key. Mechanical assemblers, machinists, and maintenance technicians working on equipment, fixtures, and precision assemblies are the primary installers of this fastener type.

This screw is suited for general mechanical assemblies, machine tool fixtures, electronic enclosures, and light structural hardware where a flush or near-flush head profile is preferred over a standard socket head cap screw. The black oxide coating provides mild corrosion resistance and reduces surface reflectivity, making it a common choice in industrial and precision manufacturing environments. The 5-40 thread size is typical in small-frame applications including instrument panels and light-duty mechanical linkages.

Key Features

• Button head profile provides a low-profile, rounded appearance suitable for clearance-critical assemblies
• Alloy steel construction with 36-43 HRC hardness for strong clamping in small-fastener applications
• Black oxide finish offers mild corrosion resistance and a non-reflective surface
• 5/64-inch hex socket drive for use with standard hex key or socket bit tools
• 3A thread fit class ensures tight tolerance engagement per ANSI/ASME B18.3 and ASTM F835 standards
• Fully threaded 1/2-inch shank length maximizes thread engagement across the full grip range

Compatibility

Designed as a standard replacement or original-install fastener for applications specifying a 5-40 UNC button socket cap screw per ANSI/ASME B18.3 and ASTM F835.

Installation Notes

Installation requires a 5/64-inch hex key or matching socket bit. Ensure mating threaded holes are clean and free of debris before installation. Do not exceed the design load of the fastener or use in applications requiring a thread fit class other than 3A without verifying compatibility. Black oxide fasteners are not a substitute for plated or stainless fasteners in wet or corrosive environments.