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The VALUE COLLECTION 721298BR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head driven by a 1/2-inch hex socket and is manufactured from alloy steel with a black oxide finish for corrosion resistance in moderate environments. The screw measures 3/4-10 UNC thread by 6 inches overall length and is partially threaded. It conforms to ASME/ANSI B18.3 and ASTM F835 standards. Machinists, millwrights, and maintenance technicians install this type of fastener in structural assemblies, machine frames, and fixture work where a low-profile head is required.
This flat socket cap screw is suited for use in industrial, manufacturing, and mechanical maintenance settings. The 3/4-10 UNC thread size and 6-inch length make it appropriate for thicker material assemblies where partial threading is needed to engage a tapped hole at depth. The black oxide finish blends into ferrous assemblies and provides mild surface protection. It is sold individually and is compatible with standard 1/2-inch hex keys or socket drive tools.
Designed as a standard UNC replacement or specification fastener for industrial machinery, structural fixtures, and mechanical assemblies requiring a 3/4-10 x 6-inch flat socket cap screw per ASME/ANSI B18.3.
Installation is typically performed by machinists, millwrights, or maintenance mechanics using a properly sized 1/2-inch hex key or socket drive. Ensure the mating tapped hole is clean and the correct 82-degree countersink is machined to the appropriate depth before seating the fastener. Do not exceed the rated torque capacity of the alloy steel grade being used, and consult applicable fastener torque tables for the specific property class. Always de-energize or lock out equipment before performing fastener installation or removal on live machinery.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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