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The VALUE COLLECTION 204066A is a partially threaded hex head cap screw designed for secure mechanical fastening in demanding trade and industrial applications. Manufactured from Grade 316 stainless steel, this fastener delivers strong corrosion resistance in wet, chemical-exposure, and marine environments where standard carbon steel would fail. The 1/2-13 UNC thread size and 2-1/4-inch length under head make it well-suited for structural connections requiring a reliable grip without full-thread engagement. This screw ships uncoated, preserving the natural corrosion-resistant properties of the 316 alloy. Plumbers, pipefitters, HVAC technicians, and industrial maintenance professionals commonly use fasteners of this type when assembling flanged connections, equipment mounts, and support structures.
This hex head cap screw is used across residential, commercial, and light industrial installations wherever corrosion resistance and mechanical strength are priorities. Typical applications include pipe flange assemblies, pump mounts, HVAC equipment brackets, pool equipment enclosures, and outdoor structural connections exposed to moisture or chlorine. The partially threaded shank provides a smooth bearing surface that helps align mating components before the threaded portion engages, which is useful in bolted joint assemblies where shear load distribution matters.
Designed as a standard 1/2-13 UNC hex head cap screw for use with any 1/2-13 threaded nut, insert, or tapped hole conforming to Unified National Coarse thread specifications.
Installation is performed by plumbers, pipefitters, HVAC technicians, or general maintenance trades using standard hex wrenches or socket sets. Always verify that mating threads are clean and free of debris before installation to avoid galling, which is a common risk with stainless steel fasteners. Applying an anti-seize compound is strongly recommended to prevent thread galling during torquing. 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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