National Marker N222380 Zinc Square U-bolt 3/8 X 4 in

Product Description

The NATIONAL MARKER N222380 is a zinc-plated square U-bolt designed to secure pipe, conduit, tubing, and other round or rectangular stock to wood or metal framing members. Formed from steel wire with a zinc finish for basic corrosion resistance, this fastener features a 3/8-inch thread diameter, a 4-inch inside length, and a 3-inch inside width. It ships assembled with a mounting plate and two hex nuts included, making it ready for immediate installation. Plumbers, electricians, and general contractors reach for this hardware when strapping pipe or conduit runs to structural members.

This U-bolt is suited for light commercial and residential applications where a square-shoulder fastener is required to maintain alignment on flat or rectangular mounting surfaces. Common uses include securing copper, PVC, or EMT runs to wood joists and metal unistrut, as well as anchoring equipment brackets. The included hex nuts and plate reduce the need to source separate hardware at the job site.

Key Features

• Square U-bolt profile maintains consistent contact against rectangular mounting surfaces
• Zinc plating provides a protective finish on the steel wire construction
• Ships with mounting plate and two hex nuts fully assembled
• 3/8-inch thread diameter accommodates standard hardware and wrenches
• Suitable for use on wood and metal substrate materials

Compatibility

Designed as an OEM-style replacement or direct-use fastener for securing pipe, conduit, and equipment to rectangular wood and metal framing members in residential and light commercial installations.

Installation Notes

Installation is typically performed by licensed plumbers, electricians, or general contractors following applicable NEC or IPC strapping requirements. Shut off and de-energize or depressurize the line being strapped before positioning the U-bolt. Use appropriately sized wrenches to tighten the hex nuts evenly against the mounting plate to avoid distorting the bolt legs or cracking plastic conduit.

Technical Specifications

• Thread Diameter: 3/8 inches
• Inside Length: 4 inches
• Inside Width: 3 inches
• Weight: 0.465 pounds
• Material: Steel wire with zinc finish
• Includes: Mounting plate and two hex nuts
• UPC: 00038613178724

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N222380