Gibraltar GIB53035 Round U-bolt 1/4-20 Unc Steel Hot Galvanized

Product Description

The GIBRALTAR GIB53035 is a round U-bolt designed to secure 1-1/2 inch pipe to structural supports in mechanical, plumbing, and HVAC piping systems. Manufactured from C-1010 steel with a hot galvanized finish, this fastener resists corrosion in both indoor and outdoor installations. The 1/4-20 UNC thread runs 1-3/8 inches in length, providing adequate engagement for standard hex nuts. Two nuts are included with each unit. Overall length measures 3-1/4 inches and width measures 2 inches, making it sized correctly for standard 1-1/2 inch nominal pipe. The unit weighs 0.1 pounds. Licensed tradespeople and pipefitters reach for this hardware during pipe support rough-in and bracket installations.

This U-bolt is suited for residential and light commercial pipe support applications where 1-1/2 inch nominal pipe must be anchored to unistrut, threaded rod, or flat plate supports. Typical installation scenarios include HVAC refrigerant line support, domestic water piping, gas distribution piping, and conduit support runs. The without-mount-plate configuration allows the installer to pair this U-bolt with their own backing hardware, offering flexibility in support arrangements across various framing and structural substrates.

Key Features

• Round profile sized for 1-1/2 inch nominal pipe
• 1/4-20 UNC threading with 1-3/8 inch thread length for secure nut engagement
• C-1010 steel construction with hot galvanized finish for corrosion resistance
• Without mount plate for flexible pairing with installer-supplied backing hardware
• Includes two hex nuts — no additional hardware purchase required for basic installation
• Overall length of 3-1/4 inches and width of 2 inches

Compatibility

Designed as an OEM-style replacement and standard-fit U-bolt for 1-1/2 inch nominal pipe support applications in mechanical, plumbing, and HVAC piping systems.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or HVAC technicians in accordance with applicable mechanical and plumbing codes such as the IPC or IFGC. Shut off and depressurize any pipe or system before repositioning or retrofitting support hardware. Use appropriately rated backing plates or unistrut channel when mounting to ensure load is distributed correctly across the support structure. Do not overtighten the nuts beyond hand-snug plus a controlled turn, as excessive torque can deform the pipe or strip the 1/4-20 threads.