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The VALUE COLLECTION R56000228 is a fully threaded hex head cap screw designed for general-purpose fastening in corrosion-prone environments. Manufactured from Grade 316 stainless steel, this fastener delivers strong resistance to chlorides, salt spray, and chemical exposure, making it a reliable choice for marine, industrial, and outdoor mechanical assemblies. The screw features a 5/8-11 UNC thread and measures 2-1/4 inches under the head. At 0.25 pounds, it is a solid, full-bodied fastener suited for structural and equipment fastening tasks performed by machinists, millwrights, plumbers, and mechanical contractors.
This fastener is appropriate for use in residential and commercial applications where standard carbon steel hardware would corrode prematurely. Typical installations include pipe hangers, pump mounting, equipment enclosures, marine fixtures, pool and water treatment equipment, and chemical processing assemblies. The fully threaded shank provides maximum thread engagement throughout the grip length, which is particularly useful in shorter fastening scenarios where a partially threaded bolt would not provide adequate holding strength.
Designed for use with standard 5/8-11 UNC inch-series hex nuts, flat washers, and threaded holes conforming to UNC specifications in Grade 316 stainless or compatible materials.
Installation should be performed by a qualified mechanic, millwright, or licensed tradesperson using a properly sized hex wrench or socket. Stainless steel fasteners are susceptible to galling during installation — apply an appropriate anti-seize compound to the threads before torquing. Never mix stainless steel fasteners with dissimilar metals in submerged or high-moisture environments without accounting for galvanic corrosion potential. Follow applicable mechanical codes and equipment manufacturer specifications for torque requirements.
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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