Value Collection 401448BR Hex Cap Screw 5/8-11 4-1/2 in 316 Ss

Product Description

The VALUE COLLECTION 401448BR is a 5/8-11 UNC hex head cap screw measuring 4-1/2 inches under the head, manufactured from Grade 316 stainless steel with a bright, uncoated finish. Partially threaded along its shank, this fastener delivers the corrosion resistance and mechanical strength required in demanding trade environments including plumbing, HVAC equipment mounting, pool and watertreatment installations, and marine-adjacent applications. Licensed tradespeople and maintenance technicians reach for Grade 316 stainless when exposure to chlorides, moisture, or chemical agents would compromise carbon or 300-series lower-grade fasteners.

This cap screw is suited for structural and mechanical assemblies where a partially threaded shank is needed to prevent thread engagement through the full grip length, allowing the unthreaded portion to bear shear loads cleanly. Typical applications include equipment base mounting, pipe hanger assemblies, pump and motor mounting flanges, and pool equipment frames. The 5/8-11 UNC thread standard is widely compatible with standard nuts, inserts, and tapped holes across industrial and commercial equipment platforms.

Key Features

• Grade 316 stainless steel construction for superior chloride and corrosion resistance
• 5/8-11 UNC thread form compatible with standard inch-series hardware
• Partially threaded shank for improved shear load distribution in grip-length applications
• 4-1/2 inch length under head accommodates thicker material stacks and spacers
• Bright, uncoated finish — no plating to delaminate or introduce galvanic incompatibility with stainless nuts
• 15/16 inch hex key size fits standard combination and socket wrenches

Compatibility

Designed for use with standard 5/8-11 UNC inch-series hex nuts, flat washers, lock washers, and tapped holes conforming to UNC thread standards in industrial, commercial, and trade equipment assemblies.

Installation Notes

Installation is performed with a standard 15/16 inch open-end, box, or socket wrench. When threading into tapped holes or pairing with stainless nuts, apply an appropriate anti-seize compound to prevent galling, which is common with 300-series and 316 stainless fasteners under torque. Ensure mating hardware is also 316 or compatible stainless to avoid galvanic corrosion in wet or chemically active environments. Always inspect thread engagement and confirm the correct grip length before final tightening.