Gibraltar GIB53083 Round U-bolt 3/8-16 Unc 1-1/4 Inch Pipe

Product Description

The GIBRALTAR GIB53083 is a round U-bolt designed to secure pipe runs in mechanical, plumbing, and utility installations. Manufactured from C-1010 steel with a hot galvanized finish, this fastener resists corrosion in exposed or mildly wet environments. It features a 3/8-16 UNC thread with a 1-1/8 inch thread length and a 1-3/4 inch inside width, sized to fit 1-1/4 inch pipe. The GIB53083 ships without a mount plate and includes two nuts. Plumbers, pipefitters, and mechanical contractors use this type of U-bolt for anchoring pipe to unistrut, structural steel, or wood blocking in both residential and commercial settings.

This U-bolt is suited for pipe support applications in plumbing, HVAC piping, and general mechanical work where 1-1/4 inch pipe must be secured to a structural surface. The hot galvanized finish makes it appropriate for installations in garages, mechanical rooms, crawlspaces, and other locations where some moisture exposure is expected. The round bend profile conforms closely to the pipe OD for a stable, low-movement grip. It is sold as a single unit, making it practical for small repairs or spot replacements alongside standard new construction quantities.

Key Features

• Round profile sized for 1-1/4 inch pipe with 1-3/4 inch inside width
• 3/8-16 UNC thread with 1-1/8 inch thread length
• C-1010 steel construction with hot galvanized finish for corrosion resistance
• Sold without mount plate for use with unistrut, brackets, or custom backing
• Includes two nuts — ready to install out of the package
• Lightweight at 0.2 pounds — easy to stock and handle in quantity

Compatibility

Designed as a standard pipe support fastener for 1-1/4 inch nominal pipe in plumbing, HVAC piping, and mechanical systems using inch-standard hardware.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or mechanical contractors. Shut off the piping system and relieve any pressure before repositioning or replacing pipe supports. Tighten nuts evenly on both threaded legs to avoid canting the pipe — do not overtighten to the point of deforming the pipe wall. Follow applicable IPC or local mechanical code requirements for pipe support spacing and hanger type.