Value Collection 40885 Button Socket Cap Screw 1/2-13

Product Description

The VALUE COLLECTION 40885 is a 1/2-13 button socket cap screw designed for applications requiring a low-profile head with high clamping strength. The hex socket drive accepts a 5/16-inch hex key for installation in confined spaces where a standard wrench cannot reach. Manufactured from alloy steel with a black oxide finish, this fastener delivers reliable corrosion resistance and a hardness rating of 36 to 43 HRC. The fully threaded shank runs the full 1-inch length under head, maximizing thread engagement in shallow material thicknesses. Each package contains 25 screws.

This button socket cap screw is suited for mechanical assemblies, machine guarding, fixtures, and structural joints where a flush or near-flush fastener profile is required. The UNC thread form and Class 3A thread fit make it compatible with standard tapped holes and UNC nuts used across general industrial, manufacturing, and maintenance applications. Licensed trades and industrial mechanics commonly install this fastener during equipment fabrication and repair work.

Key Features

• Button head profile provides low clearance over the mating surface
• 5/16-inch hex socket drive for use with standard hex keys or Allen drivers
• Alloy steel construction with 36 to 43 HRC hardness for high-strength fastening
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Fully threaded 1/2-13 UNC shank with right-hand thread direction
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or stock fastener for use in standard 1/2-13 UNC tapped holes across general industrial and mechanical assembly applications.

Installation Notes

Installation requires a 5/16-inch hex key or socket driver. Verify that the receiving hole is tapped to 1/2-13 UNC Class 2B or 3B tolerance before installation. Follow applicable torque specifications from ANSI/ASME B18.3 tables for the fastener grade and material being joined. Avoid overtightening, which can strip the socket drive or yield the shank.