Value Collection -36864-1 Flat Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION -36864-1 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head driven by a 3/8-inch hex socket and is fully threaded along its 1-inch overall length with a 5/8-11 UNC thread pattern. Manufactured from alloy steel with a black oxide finish, this screw provides good corrosion resistance and a clean, low-profile appearance. It is sold in packages of 10 and meets ASME/ANSI B18.3 and ASTM F835 standards. Machinists, maintenance technicians, and fabricators install this fastener where a recessed, flat-head profile is required in metal assemblies.

This screw is suited for mechanical assemblies, fixtures, machine bases, and structural components where the fastener head must sit flush with or below the work surface. The 5/8-11 UNC thread size and alloy steel construction make it appropriate for moderate-to-high-load connections in industrial and commercial environments. The black oxide finish reduces galling and provides light surface protection. It is commonly used in machine shops, manufacturing facilities, and general industrial maintenance applications.

Key Features

• 82-degree flat head profile allows flush or countersunk installation
• 3/8-inch hex socket drive for standard hex key or socket tooling
• Fully threaded 5/8-11 UNC along entire 1-inch length
• Alloy steel construction for high tensile strength
• Black oxide finish provides light corrosion resistance and reduced light reflection
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 5/8-11 UNC flat socket cap screw for use in any application requiring an ASME/ANSI B18.3-compliant countersunk hex socket fastener in that thread size.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 3/8-inch hex key or hex socket driver. The mating counterbore or countersink must be machined to an 82-degree included angle to achieve a flush seating surface. Ensure threads in the receiving hole are clean and free of debris before installation. Follow applicable torque guidelines for the fastener grade and material being joined.