Value Collection 721266BR Flat Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION 721266BR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a 82-degree flat head driven by a 3/8-inch hex socket, making it suitable for use with standard Allen keys or hex socket drive tools. The fastener is manufactured from alloy steel with a black oxide finish, which provides moderate corrosion resistance and reduces light reflection in finished assemblies. The screw measures 4.5 inches in overall length with a 5/8-11 UNC thread form and is partially threaded. It meets ASME/ANSI B18.3 and ASTM F835 standards. Licensed mechanics, millwrights, and general maintenance technicians are the primary installers of this fastener type.

This flat socket cap screw is used in machinery, tooling fixtures, structural assemblies, and industrial equipment where a low-profile or flush-mount fastener is required. The 5/8-11 UNC thread size is a coarse-thread designation common in heavy industrial and mechanical applications. The black oxide alloy steel construction suits indoor and controlled-environment installations. Partial threading is standard for longer grip-length applications where clamping force must be distributed across an unthreaded shank section.

Key Features

• 82-degree flat head profile for flush or countersunk installations
• 3/8-inch hex socket drive compatible with standard Allen and socket drive tools
• Alloy steel construction meets ASTM F835 mechanical requirements
• Black oxide finish for moderate corrosion resistance and low reflectivity
• Partially threaded shank for improved clamping in thick-material assemblies
• UNC 5/8-11 thread standard per ASME/ANSI B18.3

Compatibility

Designed as a standard UNC replacement or new-install flat socket cap screw for machinery, fixtures, and industrial assemblies requiring a 5/8-11 coarse-thread, 82-degree countersunk fastener in alloy steel.

Installation Notes

Installation is performed by machinists, millwrights, or mechanical technicians using a 3/8-inch hex socket driver or Allen key. Ensure the mating countersink is machined to an 82-degree included angle before installation. Apply thread lubricant or anti-seize compound as appropriate for the assembly environment. Torque to the value specified by the equipment manufacturer or applicable fastener standard for the given material and thread engagement.