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The VALUE COLLECTION 209021 is a 5/8-11 hex head cap screw measuring 5 inches under the head, manufactured from 18-8 stainless steel with a Unified National Coarse (UNC) thread standard. This fastener is built for corrosion-resistant clamping and joining applications where standard carbon steel hardware is unsuitable. The 18-8 stainless alloy provides solid resistance to oxidation and mild chemical exposure. The 15/16-inch hex drive is compatible with standard hex wrenches and sockets. Mechanical contractors, plumbers, electricians, and maintenance technicians reach for this grade when fastening equipment in damp or corrosive environments.
This cap screw is suited for a wide range of trade and industrial applications, including equipment mounting, pipe flange bolting, electrical enclosure assembly, and structural connections where corrosion resistance is required. Its inch-series 5/8-11 UNC thread engages standard nuts, threaded plates, and tapped holes machined to UNC specifications. Typical use cases include HVAC unit bases, pump flanges, pool equipment enclosures, and general mechanical assemblies exposed to moisture or outdoor conditions.
Designed for use with standard 5/8-11 UNC inch-series nuts, washers, and tapped components in mechanical, plumbing, electrical, and HVAC assemblies.
Installation is performed by mechanical technicians, plumbers, or electricians depending on the application. De-energize equipment and depressurize any associated piping before fastener service. Use a properly sized 15/16-inch wrench or socket to drive the fastener; avoid pipe extensions on wrenches that can over-stress stainless threads. Apply anti-seize compound to stainless threads when fastening into dissimilar metals to prevent galling.
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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