Value Collection R52001344 Hex Head Bolt 3/8-16 3-1/2 in Grade 2

Product Description

The VALUE COLLECTION R52001344 is a Grade 2 steel hex head bolt designed for general-purpose fastening in structural, mechanical, and trade applications. It features a 3/8-16 UNC thread with a 3-1/2 inch length under head and is partially threaded, which provides a smooth shank section that resists shear loads and allows for precise clamping. The hot-dipped galvanized finish delivers corrosion resistance suitable for outdoor, wet, or treated-lumber environments. The 9/16 inch hex drive is standard for common wrenches and impact drivers. This bolt meets ANSI/ASME B18.2.1 dimensional standards and is sold in multiples of 50.

This bolt is used across a wide range of trade installations including HVAC equipment mounting, structural framing, plumbing fixture support, and general mechanical assembly. The partial threading and galvanized coating make it a practical choice for outdoor equipment pads, deck framing, pressure-treated lumber connections, and corrosive environments where a zinc-rich surface finish is required. It is appropriate for both residential and light commercial applications where Grade 2 tensile strength is sufficient.

Key Features

• 3/8-16 UNC thread for broad hardware compatibility
• 3-1/2 inch length under head suits deeper clamping applications
• Partially threaded shank improves shear resistance and clamping integrity
• Hot-dipped galvanized finish for corrosion resistance in outdoor and wet conditions
• Meets ANSI/ASME B18.2.1 and ANSI/ASME B18.2.2 dimensional standards
• Grade 2 steel construction for general-purpose structural and mechanical use

Compatibility

Designed as a general-purpose replacement or stock fastener for applications requiring a 3/8-16 UNC partially threaded hex head bolt with a 3-1/2 inch length under head and galvanized finish.

Installation Notes

Installation is typically performed by maintenance technicians, HVAC installers, plumbers, or general contractors using a 9/16 inch wrench or socket driver. Always de-energize and isolate equipment before fastening components in electrical or mechanical enclosures. Use appropriate flat washers and lock washers per application requirements to prevent loosening under vibration. Do not exceed the rated load for Grade 2 fasteners in high-tension or critical-structural connections.