Value Collection 721312BR Flat Socket Cap Screw 7/8-9 X 5 in

Product Description

The VALUE COLLECTION 721312BR is a flat socket cap screw designed for applications where a flush or countersunk fastener profile is required. Built from alloy steel with a black oxide finish, it provides solid corrosion resistance and durability in demanding environments. The screw features an 82-degree flat head driven by a 9/16-inch hex socket, follows UNC thread standards at 7/8-9, and measures 5 inches in overall length with partial threading. It meets ASME/ANSI B18.3 and ASTM F835 standards. Machinists, millwrights, and maintenance technicians typically install these fasteners in machine assemblies, fixtures, and structural components where a low-profile head is necessary.

This flat socket cap screw is suited for general industrial and mechanical applications requiring a countersunk fastener. Its partially threaded shank helps maintain accurate alignment and clamping in through-hole or tapped applications. The black oxide finish reduces surface reflectivity and offers mild corrosion protection in dry or lightly oiled environments. Typical use cases include machine frames, jigs, fixtures, and equipment enclosures where the fastener must sit flush with or below the mating surface.

Key Features

• 82-degree flat head profile for countersunk, flush-mount installations
• 9/16-inch hex socket drive for high-torque application with standard Allen keys or hex bits
• Alloy steel construction for strength in structural and mechanical assemblies
• Black oxide finish provides mild corrosion resistance and low surface reflectivity
• Partially threaded shank supports accurate alignment and clamping force
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard fastener for industrial machinery, fixtures, and equipment requiring a 7/8-9 UNC flat socket cap screw with a 5-inch overall length.

Installation Notes

Installation should be performed by qualified machinists or maintenance technicians familiar with UNC threaded fasteners. Ensure the mating hole is properly countersunk to 82 degrees before installing. Apply appropriate thread lubricant or fastener-grade adhesive as required by the application. Do not exceed the rated torque range for the fastener grade and never install into damaged or misaligned threads.