Value Collection 211349BR Flat Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION 211349BR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Manufactured from alloy steel with a black oxide finish, this screw features an 82-degree flat head and a 3/8-inch hex socket drive. The 5/8-11 UNC thread runs the full length of the 2-1/4-inch body, providing maximum thread engagement in through-hole and tapped applications. It meets ASME/ANSI B18.3 and ASTM F835 standards, making it suitable for structural and mechanical assemblies where dimensional consistency and load performance are required. Licensed machinists, millwrights, and maintenance technicians are the typical installers.

This flat socket cap screw is used in applications where the fastener head must sit flush with or below the surface of the mating material. Common install scenarios include machine frames, fixtures, tooling plates, and structural steel assemblies in both light industrial and heavy manufacturing environments. The black oxide finish provides mild corrosion resistance and reduces light reflection in precision or optical setups. The fully threaded shank makes it well suited for shorter clamping lengths and blind-hole applications where full thread engagement is needed.

Key Features

• 82-degree flat head for flush or countersunk installation
• 3/8-inch hex socket drive for high-torque engagement with standard Allen keys or socket drivers
• Fully threaded 5/8-11 UNC shank for maximum thread engagement
• Alloy steel construction for high tensile strength in structural and mechanical assemblies
• Black oxide finish for mild corrosion resistance and low-reflectance surface
• Meets ASME/ANSI B18.3 and ASTM F835 dimensional and performance standards

Compatibility

Designed as a standard inch-series flat socket cap screw compatible with any tapped hole or through-hole application using 5/8-11 UNC threading and a countersunk seating surface dimensioned for an 82-degree flat head.

Installation Notes

Installation requires a correctly sized countersunk hole to match the 82-degree flat head geometry before driving. Use a calibrated torque wrench and the appropriate 3/8-inch hex key or socket bit to achieve proper seating without stripping the drive recess. Ensure mating threads are clean and free of debris before installation. Follow applicable mechanical codes and fastener manufacturer torque specifications for the material and joint type involved.