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The VALUE COLLECTION 403168PR is a partially threaded hex head cap screw designed for general-purpose fastening in structural, mechanical, and industrial assemblies. It carries a 7/16-14 UNC thread size with a 4.5-inch length under head, and is manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance. The hex drive requires a 5/8-inch wrench or socket. This fastener is installed by mechanics, millwrights, pipefitters, and general tradespeople wherever a partially threaded bolt is specified to allow controlled clamping without full-length thread engagement.
This screw is suited for light-to-medium duty applications in residential and commercial construction, mechanical equipment assemblies, and maintenance work. Partial threading allows the unthreaded shank to pass cleanly through one or more members before engaging a tapped hole or nut, making it appropriate for through-bolt configurations and joint assemblies where shank fit matters. Sold individually with a minimum order quantity of 25 pieces.
Designed as a standard inch-series hex head cap screw for use with 7/16-14 UNC tapped holes, nuts, and threaded inserts in general mechanical and structural assemblies.
Installation is performed by hand-threading into the mating tapped hole or nut, then torquing with a 5/8-inch combination wrench, box-end wrench, or socket. Always ensure the mating thread is clean and free of debris before installation. Follow applicable torque specifications from the equipment manufacturer or relevant standards for Grade 2 fasteners. Do not use an impact driver at full power without a torque-limiting method, as Grade 2 steel is not rated for the same clamp loads as higher-grade fasteners.
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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