National Mfg N347-815 U-bolt 1/2x3-1/2x6 Zinc Plated Steel

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N347-815 is a zinc-plated steel U-bolt designed to fasten pipe, conduit, wood, and similar materials to a fixed structure. Measuring 0.5 inches in diameter with a 3.5-inch inside width and 6-inch leg length, it is manufactured from steel wire and finished with a zinc coating for corrosion resistance. Each unit ships with a plate and hex nuts included, making it a complete fastening assembly ready for installation. It is suited for plumbing, automotive, and general industrial applications where a reliable, code-compatible mechanical connection is needed.

This U-bolt is appropriate for both residential and light commercial use. Common install scenarios include securing water supply lines, drain pipes, conduit runs, and exhaust components to framing, unistrut, or structural members. The included plate and hex nuts simplify assembly and reduce the need for additional hardware. It is sold as a package of 5 individual units, making it practical for multi-point installations or service vehicle stock.

Key Features

• Zinc-plated steel wire construction for corrosion resistance in damp and outdoor environments
• 0.5-inch bolt diameter with 3.5-inch inside width and 6-inch leg length for versatile pipe and framing fitment
• Plate and hex nuts included — no additional hardware required for a complete assembly
• Suitable for plumbing, automotive, and general industrial fastening applications
• Package quantity of 5 units for multi-point or repeat installations

Compatibility

Designed for fastening pipe, conduit, wood, and similar materials in automotive, plumbing, and general home or industrial applications where a 0.5-inch U-bolt with 3.5-inch inside width is the appropriate fit.

Installation Notes

Installation is typically performed by plumbers, pipefitters, or general tradespeople using standard hand tools. Shut off flow or de-energize the line being secured before tightening. Follow applicable code requirements, including IPC or IFGC guidelines for pipe support spacing and fastener material compatibility. Do not overtighten hex nuts against the bearing plate, as this can deform the pipe wall or strip the thread.