Value Collection 721286BR Flat Socket Cap Screw 3/4-10

Product Description

The VALUE COLLECTION 721286BR 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 1/2-inch hex socket, making it compatible with standard Allen-style tooling. Machined from alloy steel with a black oxide finish, this screw offers corrosion resistance and a low-reflectance appearance suited for industrial and mechanical assemblies. The 3/4-10 UNC thread and 2-3/4-inch overall length make it appropriate for heavy-duty structural and machine-frame connections. Fully threaded along its length, it provides maximum thread engagement across the full grip range. Installation requires no special equipment beyond a calibrated hex key or socket driver.

This fastener is used in machinery, structural steel assemblies, jig and fixture construction, and general industrial fabrication where a flush-mount fastener is required. The flat head seats into a countersunk hole machined to 82 degrees, allowing the fastener head to sit level with or below the mating surface. It is commonly installed by machinists, millwrights, and maintenance technicians working on production equipment, tooling plates, and fabricated steel frames. The black oxide finish makes it a practical choice where light oil retention and modest corrosion resistance are priorities without requiring a plated finish.

Key Features

• 82-degree flat head profile seats flush in standard countersunk holes
• 1/2-inch hex socket drive for use with Allen keys or hex socket drivers
• 3/4-10 UNC fully threaded for maximum thread engagement
• Alloy steel construction for high tensile strength in heavy-duty applications
• Black oxide finish provides mild corrosion resistance and low-glare surface
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard 3/4-10 UNC flat socket cap screw per ASME/ANSI B18.3, compatible with countersunk holes machined to 82 degrees in steel, aluminum, and similar structural materials requiring a flush hex-socket fastener.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using an appropriately sized 1/2-inch hex key or socket driver. Always verify the countersink angle of the mating part is machined to 82 degrees before installation to ensure proper head seating. De-energize and lock out any equipment before replacing fasteners on operating machinery per applicable safety procedures. Apply a thread lubricant or anti-seize compound as required by the assembly specification to achieve accurate clamp load.