Value Collection 36855 Flat Socket Cap Screw 1/2-13 X 1-1/4 in

Product Description

The Value Collection 36855 is a flat socket cap screw designed for flush or countersunk fastening applications in metal assemblies. It features an 82-degree flat head profile and a 5/16-inch hex socket drive, allowing installation with a standard hex key or Allen driver. Machined from alloy steel with a black oxide finish, the fastener offers good corrosion resistance in protected indoor environments. The 1/2-13 UNC thread and 1-1/4-inch overall length make it a common choice for medium-duty structural and mechanical joints. Installation is typically performed by machinists, millwrights, or maintenance technicians working on equipment frames, fixtures, and fabricated steel assemblies.

This fastener is suited for general industrial and mechanical applications where a low-profile head is required to sit flush with or below the mating surface. The fully threaded shank engages the full grip length of the joint, which is appropriate for thinner material stacks or applications requiring maximum thread engagement. Black oxide alloy steel is a standard specification for machine tool components, jigs, fixtures, and structural steel fabrication work in shop and light industrial settings.

Key Features

• 82-degree flat head profile for flush countersunk installations
• 5/16-inch hex socket drive compatible with standard Allen keys and hex bit drivers
• Fully threaded shank for maximum thread engagement across the grip length
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM F835 fastener standards
• Black oxide finish provides mild corrosion resistance in dry or lightly oiled environments
• UNC thread form for compatibility with standard inch-series tapped holes

Compatibility

Designed as an OEM-style replacement or stock fastener for any application requiring a 1/2-13 UNC fully threaded flat socket cap screw conforming to ASME/ANSI B18.3 and ASTM F835 standards.

Installation Notes

Installation requires a 5/16-inch hex key or Allen bit driver. Ensure the mating hole is properly countersunk to 82 degrees before installation to achieve a flush seating surface. De-energize and lock out any equipment before fastener removal or replacement per applicable safety procedures. Torque to values specified by the equipment manufacturer or applicable structural standards for the joint material and thread size.