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The VALUE COLLECTION 403068PR is a 5/16-18 UNC hex head cap screw designed for general-purpose mechanical and structural fastening applications. Manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance, this screw measures 2 inches under the head and features partial threading along the shank. The 1/2-inch hex drive allows installation with standard wrenches or sockets. At 0.05 pounds per piece, it is suited for light-to-medium clamping loads in assemblies where Grade 2 tensile strength meets the design requirement. Installers and maintenance professionals across HVAC, plumbing, electrical, and general trades will find this a standard hardware item for panel, bracket, and equipment mounting tasks.
This screw is appropriate for inch-system fastening applications in residential and light commercial construction, equipment assembly, and field service work. The partial threading design provides a smooth shank section that can bear shear loads and align mating parts before the threads engage. It is sold individually but carries a minimum order quantity of 100 pieces, making it practical for stocking in service vehicles or shop inventory where a consistent supply of 5/16-18 fasteners is needed.
Designed as a standard inch-system UNC hex head cap screw for use in any application requiring a 5/16-18 threaded fastener with a 2-inch grip length and partial threading.
Installation is performed with a 1/2-inch open-end, box, or socket wrench; impact drivers may be used with an appropriate hex socket. De-energize and lock out any equipment before replacing or adding fasteners to live panels or mechanical assemblies. Apply thread lubricant or thread-locking compound only if specified by the equipment manufacturer. Tighten to the torque value specified by the assembly design — do not over-torque Grade 2 fasteners, as they have lower proof load than Grade 5 or Grade 8 hardware.
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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