Value Collection 721288BR Flat Socket Cap Screw 3/4-10

Product Description

The VALUE COLLECTION 721288BR is a flat socket cap screw designed for flush or countersunk fastening applications in structural and mechanical assemblies. It features an 82-degree flat head profile and a 1/2-inch hex socket drive, accepting a standard hex key for installation. The fastener is fully threaded along its 3-1/4-inch overall length with a 3/4-10 UNC thread form. Manufactured from alloy steel with a black oxide finish, it offers solid mechanical strength and moderate corrosion resistance for indoor and controlled-environment use. Machinists, millwrights, and maintenance technicians are the typical installers.

This screw is suited for applications where the fastener head must sit flush with or below the mating surface. Common use cases include machine frames, jigs, fixtures, tooling plates, and equipment enclosures in both light industrial and heavy mechanical settings. The 3/4-10 UNC coarse thread provides good thread engagement and is compatible with standard tapped holes in steel, aluminum, and cast iron components. The black oxide finish blends visually with dark surface assemblies and reduces light reflection in precision setups.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 1/2-inch hex socket drive for high-torque installation with a hex key or socket driver
• 3/4-10 UNC fully threaded for maximum thread engagement along the full shank length
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish delivers mild corrosion resistance and a low-glare matte appearance
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard inch-series flat socket cap screw for use in any tapped or through-hole assembly requiring a 3/4-10 UNC thread and an 82-degree countersunk seat per ASME/ANSI B18.3.

Installation Notes

Installation is performed using a 1/2-inch hex key or hex bit driver rated for the applicable torque range. Ensure the mating hole is tapped to 3/4-10 UNC and countersunk to 82 degrees before installation. De-energize, depressurize, or lock out any machinery before performing fastener service. Do not substitute a non-spec drive tool that may cam out and damage the socket recess.