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The VALUE COLLECTION R52001171 is a Grade 2 steel hex head bolt with a 3/8-16 UNC thread and a 1-1/2 inch length under head. It features partial threading and a hot-dipped galvanized finish that provides corrosion resistance in outdoor and wet-location applications. The 9/16 inch hex drive is compatible with standard wrenches and impact sockets. This bolt is manufactured to ANSI/ASME B18.2.1 dimensional standards and meets ANSI/ASME B18.2.2 requirements. It is suited for general structural and mechanical fastening work in construction, HVAC equipment mounting, plumbing support applications, and industrial maintenance tasks where a galvanized finish is required.
This bolt is used in residential and commercial construction, equipment mounting, and general-purpose structural assemblies where UNC thread fasteners are specified. The hot-dipped galvanized coating makes it appropriate for exterior installations, treated lumber contact, and environments with moderate moisture exposure. Tradespeople including HVAC installers, plumbers, and general contractors commonly use Grade 2 galvanized hex bolts for equipment pads, support strut systems, pipe hangers, and structural connections. It is sold in multiples of 100 units.
Designed for use with standard 3/8-16 UNC hex nuts and washers in inch-series fastener assemblies. Compatible with structural and equipment mounting applications requiring ANSI/ASME B18.2.1 and B18.2.2 compliant hardware.
Installation is performed with a 9/16 inch wrench or impact socket. Always power down or de-energize equipment before fastening hardware to electrical or HVAC enclosures. When used with treated lumber, verify that the hot-dipped galvanized coating meets the corrosion-resistance requirements of the applicable building code. Follow torque guidelines specified by the equipment manufacturer or applicable structural specifications for Grade 2 fasteners.
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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