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The VALUE COLLECTION R52001247 is a partially threaded hex head cap screw engineered for general industrial and mechanical fastening applications. Manufactured from Grade 5 steel with a zinc-plated finish, this fastener meets ASME B18.2.1 and SAE J429 standards for dimensional accuracy and tensile strength. The 5/8-11 UNC thread size and 11-inch length under head make it well suited for through-bolting heavy structural assemblies, equipment frames, and machinery components where a longer grip length is required. The zinc plating provides baseline corrosion resistance in mild service environments.
This cap screw is used across a wide range of trade and industrial settings, including HVAC equipment mounting, mechanical room structural work, plumbing infrastructure framing, and general fabrication. The partial threading preserves shank strength over the unthreaded section, which is useful in applications requiring the bolt to span a clearance hole before engaging a threaded nut or tapped bore. Installers working on heavy equipment bases, pump mounts, and structural steel connections will find this length and grade combination appropriate for standard UNC fastening tasks.
Designed as a standard UNC hex head cap screw for use with 5/8-11 hex nuts, flat washers, and lock washers in inch-series fastening applications across industrial, mechanical, and structural installations.
Installation should be performed by a qualified mechanic, millwright, or tradesperson familiar with inch-series UNC fasteners. Use the appropriate 15/16-inch hex socket or wrench to drive the fastener to the torque value specified by the equipment manufacturer or applicable structural design documentation. Always inspect threads for damage before installation and ensure mating threads are clean and free of debris. Do not exceed the rated clamp load for Grade 5 hardware as specified by SAE J429.
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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