Value Collection 211358BR Flat Socket Cap Screw 5/8-11x3

Product Description

The VALUE COLLECTION 211358BR is a flat socket cap screw engineered for applications requiring a flush or countersunk fastening profile. It features an 82-degree flat head driven by a 3/8-inch hex socket, making it compatible with standard Allen-type drive tools. Manufactured from alloy steel with a black oxide finish, this screw delivers solid mechanical strength and moderate corrosion resistance. The 5/8-11 UNC thread runs the full 3-inch length of the shank, providing maximum thread engagement in through-hole and blind-hole assemblies. Machinists, millwrights, and general contractors commonly specify this type of fastener in structural and mechanical assemblies where a low-profile head is required.

This flat socket cap screw is suited for use in mechanical fabrication, machine frames, fixtures, jigs, and structural steel assemblies where a countersunk socket-drive fastener is specified. The black oxide finish is appropriate for indoor and sheltered environments where light corrosion resistance is sufficient. The fully threaded shank accommodates varying grip lengths without leaving an unthreaded portion in the joint. It conforms to ASME/ANSI B18.3 and ASTM F835 standards, making it a recognized option in spec-driven commercial and industrial work.

Key Features

• 82-degree flat head delivers a flush countersunk profile in properly prepared holes
• 3/8-inch hex socket drive for use with standard Allen wrenches and hex-bit drivers
• Fully threaded 3-inch shank provides maximum thread engagement throughout the full fastener length
• Alloy steel construction for high tensile strength in structural and mechanical applications
• Black oxide finish provides light corrosion resistance and reduces light reflection on exposed fasteners
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed for use in standard 5/8-11 UNC threaded holes requiring an 82-degree countersunk flat-head socket cap screw per ASME/ANSI B18.3 and ASTM F835 specifications.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/8-inch hex key or Allen-bit driver. The mating hole must be properly countersunk to 82 degrees to achieve a flush seating surface and correct clamp load. Confirm thread engagement and hole preparation before torquing. Follow applicable fastener torque specifications from engineering drawings or recognized fastener reference standards for alloy steel UNC fasteners.