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The VALUE COLLECTION 403062PS is a fully threaded hex head cap screw sized 5/16-18 x 1-1/4 inches, manufactured from Grade 2 steel with a zinc-plated finish for corrosion resistance. It follows a Unified National Coarse (UNC) thread standard and conforms to ASME B18.2.1, ASTM A307, and SAE J429 specifications. This fastener is used across mechanical, structural, and equipment assembly applications where a standard-duty, inch-series hex cap screw is required. Installation is performed with a 1/2-inch wrench or socket. Weighing 0.05 pounds per piece, it is a lightweight component suited to general-purpose bolted connections.
This cap screw is appropriate for light- to medium-duty assemblies in residential and commercial construction, HVAC equipment mounting, plumbing fixtures, electrical enclosures, and general mechanical fabrication. Its fully threaded shank allows engagement along the entire fastener length, making it well-suited for thin-material clamping or through-bolted applications. Minimum order quantity is 100 pieces per order.
Designed as a standard inch-series hex head cap screw for general-purpose bolted assemblies requiring a 5/16-18 UNC thread pattern in steel or compatible materials.
Install using a 1/2-inch open-end, box, or socket wrench. Ensure mating threads are clean and free of debris before installation. De-energize or isolate any equipment before fastening components in electrical or mechanical systems. Do not use in applications requiring Grade 5 or Grade 8 fastener ratings, as this is a Grade 2 fastener.
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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