Value Collection 721555BR Flat Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION 721555BR is a flat socket cap screw designed for fastening applications that require a flush or countersunk head profile. It features an 82-degree flat head with a 3/8-inch hex socket drive and is manufactured from alloy steel with a black oxide finish. The 5/8-11 UNC thread and 6-1/2-inch overall length make it well suited for heavy-duty mechanical assemblies where a low-profile head is required. This fastener is partially threaded and meets ASME/ANSI B18.3 and ASTM F835 standards. It is installed by machinists, millwrights, and maintenance technicians across industrial and manufacturing environments.

This screw is used in applications where the fastener head must sit flush with or below the mating surface, such as machine frames, fixtures, tooling plates, and structural assemblies. The UNC thread form is standard in inch-system mechanical work. The black oxide finish provides mild corrosion resistance and reduces light reflection in precision equipment and tooling applications.

Key Features

• 82-degree flat head profile seats flush in countersunk holes
• 3/8-inch hex socket drive accepts standard Allen or hex key tooling
• Alloy steel construction for high tensile strength in demanding applications
• Black oxide finish for mild corrosion resistance and low-reflectance appearance
• Partially threaded shank for controlled clamping and alignment
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard inch-system flat socket cap screw for use in any application requiring a 5/8-11 UNC threaded countersunk fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation requires a correctly sized countersunk hole to match the 82-degree head angle. A 3/8-inch hex key or Allen driver should be used to drive this fastener to the appropriate torque for the joint material and application. Always ensure the mating threads and countersink are clean and free of debris before installation. Torque to values specified by the applicable engineering standard or equipment manufacturer for 5/8-11 alloy steel fasteners.