National Marker N222224 Zinc Round U-bolt Pipe Fastener

Product Description

The NATIONAL MARKER N222224 is a zinc-plated round U-bolt designed for hanging and fastening applications across pipe, wood, and structural surfaces. Part of the National catalog 2190 series, this U-bolt measures 3/8 inches in thread diameter, 3-1/2 inches in width, and 5-1/4 inches in length. The zinc finish provides corrosion resistance suitable for both indoor and outdoor environments. Plate and hex nuts are included, making it ready for immediate installation. Weighing 0.494 pounds, this hardware is built for trade-grade and industrial use where a reliable, secure fastening method is required.

This U-bolt is suited for residential, commercial, and light industrial settings. Common applications include pipe hangers, automotive support brackets, and general structural fastening to wood or metal. The pipe sizes referenced are based on the inside diameter of standard pipe, making it compatible with typical plumbing and mechanical piping layouts. Licensed plumbers, pipefitters, automotive technicians, and general contractors will encounter this hardware in a wide range of service and installation scenarios.

Key Features

• Zinc-plated steel construction for corrosion resistance in varied environments
• 3/8 inch thread diameter with 3-1/2 inch width and 5-1/4 inch overall length
• Plate and hex nuts included for complete, ready-to-install assembly
• Round bend profile suitable for standard pipe outside diameters
• Appropriate for automotive, plumbing, and general industrial fastening applications

Compatibility

Designed for use with standard pipe where sizes listed correspond to inside diameters. Suitable for automotive, plumbing, and general home or industrial fastening to pipe, wood, and similar substrates.

Installation Notes

Installation is typically performed by plumbers, pipefitters, or mechanical contractors using standard hand tools. Ensure the pipe or surface is secure and stationary before tightening the U-bolt assembly. Do not overtighten, as excessive torque can deform thin-wall pipe or damage the zinc plating. Follow applicable local mechanical or plumbing codes when using in pipe support or hanger applications.

Technical Specifications

• Thread Diameter: 3/8 inches
• Width: 3-1/2 inches
• Length: 5-1/4 inches
• Weight: 0.494 pounds
• Material: Steel with zinc plating
• Includes: Plate and hex nuts
• Series: National catalog 2190
• Unit of Measure: Each

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N222224