Value Collection 36859 Flat Socket Cap Screw 1/2-13 Pack 10

Product Description

The VALUE COLLECTION 36859 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head with a 5/16-inch hex socket drive, allowing installation with a standard hex key or Allen wrench. The screw measures 1/2-13 thread size with an overall length of 2.25 inches and is fully threaded along its entire length. Manufactured from alloy steel with a black oxide finish, it delivers solid mechanical strength and moderate corrosion resistance in controlled environments. This fastener is installed by machinists, millwrights, and maintenance technicians wherever a low-profile head is required.

This screw is suited for mechanical assemblies, machine frames, jigs, fixtures, and structural components where the fastener head must sit flush with or below the mating surface. The UNC thread standard and ASME/ANSI B18.3 and ASTM F835 compliance make it a practical choice for general industrial and mechanical maintenance work. Sold in a package quantity of 10, it is well matched to bench stock and MRO inventory needs.

Key Features

• 82-degree flat head profile for flush or countersunk seating
• 5/16-inch hex socket drive for standard Allen key installation
• Fully threaded 1/2-13 UNC shank, 2.25 inches overall length
• Alloy steel construction for high tensile strength
• Black oxide finish provides mild corrosion resistance and reduces glare
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or stock fastener for mechanical assemblies and machine components requiring a 1/2-13 UNC fully threaded flat socket cap screw with an 82-degree countersunk head.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 5/16-inch hex key or Allen driver. Always de-energize and lock out equipment before servicing any mechanical assembly. Ensure the mating countersink is machined to an 82-degree angle to achieve full head contact and proper seating. Apply appropriate thread lubricant or thread-locking compound per your engineering or maintenance specifications.