Value Collection 721530BR Flat Socket Cap Screw 7/8-9 X 7in

Product Description

The VALUE COLLECTION 721530BR is a flat socket cap screw engineered for applications requiring a flush or countersunk fastening profile. Built from alloy steel with a black oxide finish, this screw delivers solid mechanical strength and moderate corrosion resistance in a clean, low-profile head design. The 82-degree flat head seats flush with the mating surface when installed in a properly countersunk hole. Drive engagement is through a 9/16-inch hex socket. At 7 inches overall length with partial threading, this fastener is suited for through-bolt and clamping applications in machinery, tooling fixtures, and structural assemblies where head protrusion is not acceptable.

This screw is used in industrial, manufacturing, and maintenance settings wherever a countersunk socket drive fastener is required. The 7/8-9 UNC thread pitch is a coarse-thread standard common in heavy-duty machine components, jigs, fixtures, and fabricated steel assemblies. Partial threading along the 7-inch shank allows for shank-bearing load transfer in close-tolerance bored holes. Machinists, millwrights, and maintenance mechanics are the primary installers in both production and MRO contexts.

Key Features

• 82-degree flat head profile for flush countersunk installation
• 9/16-inch hex socket drive for standard Allen wrench or socket tooling
• 7/8-9 UNC coarse thread standard for broad compatibility with tapped holes
• Partially threaded shank supports shear-load and close-tolerance applications
• Alloy steel construction for high tensile strength in demanding mechanical environments
• Black oxide finish provides mild corrosion resistance and reduces light reflection

Compatibility

Designed as an OEM-style replacement or standard-specification fastener for applications requiring a 7/8-9 UNC flat socket cap screw per ASME/ANSI B18.3 and ASTM F835 standards.

Installation Notes

Installation is typically performed by machinists or maintenance mechanics using a 9/16-inch hex key or socket driver. The mating hole must be countersunk to 82 degrees to achieve proper head seating and flush surface contact. Power down and de-energize any equipment before fastener replacement in live machinery. Do not exceed the rated torque range for the alloy steel grade being used, and verify thread engagement depth meets design requirements before final tightening.