Gibraltar GIB53635 Round U-bolt 1/4-20 Unc 1-1/2 Inch Pipe

Product Description

The GIBRALTAR GIB53635 is a round U-bolt with a mount plate designed to secure 1-1/2 inch pipe to structural surfaces. Manufactured from C1010 steel with a hot-dipped galvanized finish, it delivers corrosion resistance in exposed or outdoor installations. The bolt carries a 1/4-20 UNC thread with a 1-3/8 inch thread length and an overall length of 3-1/4 inches. Two nuts are included. This fastener is installed by licensed plumbers, HVAC technicians, pipefitters, and mechanical contractors in pipe-hanging and pipe-support applications across residential and commercial projects.

This U-bolt is suited for use wherever 1-1/2 inch pipe must be clamped and anchored to a bracket, strut, or mounting surface. Common applications include water supply runs, drain lines, refrigerant line sets, and mechanical room pipe support work. The integrated mount plate distributes load across the mounting surface and simplifies one-sided fastening without a separate backing plate. The hot-dipped galvanized finish makes it appropriate for damp, wet, or moderately corrosive environments such as crawl spaces, mechanical rooms, and exterior pipe runs.

Key Features

• Round U-bolt profile sized for 1-1/2 inch pipe with a 2 inch interior width
• Mount plate included — no separate backing hardware required
• 1/4-20 UNC thread, 1-3/8 inch thread length for standard nut engagement
• C1010 steel construction with hot-dipped galvanized finish for corrosion resistance
• Two nuts included for immediate installation
• Overall length of 3-1/4 inches; sold as a single-piece assembly

Compatibility

Designed as an OEM-style pipe clamp fastener for 1-1/2 inch nominal pipe in standard plumbing, HVAC, and mechanical piping support applications where a 1/4-20 UNC mount-plate U-bolt is specified.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or mechanical contractor. Shut off fluid or refrigerant flow and depressurize the line before repositioning any pipe support hardware. Fasten the mount plate to a structurally sound surface — strut channel, beam flange, or blocking — using hardware rated for the load. Tighten both nuts evenly to avoid cocking the U-bolt against the pipe wall; do not overtighten on plastic-lined or soft-wall pipe without a protective sleeve.