National Marker N222190 Zinc Round U Bolt 3/8 in Pipe

Product Description

The NATIONAL MARKER N222190 is a zinc-plated round U bolt from the National 2190 series, designed for hanging and fastening applications across pipe, wood, and similar substrates. The U bolt measures 3/8 inch in diameter with an overall length of 195 inches and a 3.5 inch inner width. Constructed from steel with a zinc finish for corrosion resistance, this fastener ships with both a plate and hex nuts included, making it ready for immediate installation without additional hardware.

This U bolt is suited for residential, commercial, and light industrial use. Common applications include HVAC pipe hangers, plumbing support brackets, automotive mounting, and general pipe fastening tasks. The pipe sizes referenced for this fitting correspond to the inside diameter of standard pipe. It is an appropriate choice for tradespeople working across plumbing, mechanical, and automotive service environments where a reliable, zinc-protected U bolt is required.

Key Features

• Zinc-plated steel construction for corrosion resistance in indoor and moderate-exposure environments
• Round bend profile fits standard round pipe and tube profiles
• Plate and hex nuts included for complete installation out of the box
• Pipe size references correspond to inside diameters of standard pipe
• Suitable for pipe hanging, wood fastening, automotive, and general industrial use

Compatibility

Designed as an OEM-style replacement and general-use U bolt for standard round pipe fastening applications in plumbing, HVAC, automotive, and light industrial installations.

Installation Notes

Installation is typically performed by plumbers, HVAC technicians, or general contractors during pipe support and fastening work. Shut off any pressurized systems before securing or repositioning pipe runs. Use appropriate wrenches to tighten hex nuts evenly to avoid distorting the U bolt bend or stressing the pipe wall. Consult the IPC or IFGC for pipe support spacing requirements applicable to your application.

Technical Specifications

• Bolt Diameter: 3/8 inches
• Inner Width: 3.5 inches
• Overall Length: 195 inches
• Material: Steel with zinc plating
• Weight: 0.32 pounds
• Hardware Included: Plate and hex nuts
• Unit of Measure: Each
• Minimum Order Quantity: 5

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N222190