Gibraltar GIB53689 Round U-bolt 3/8-16 Unc 2 Inch Pipe

Product Description

The GIBRALTAR GIB53689 is a round U-bolt with a mount plate designed to secure 2-inch pipe in mechanical, plumbing, and HVAC support applications. Fabricated from C-1010 steel with a hot galvanized finish, this fastener resists corrosion in exposed or wet service environments. It features a 3/8-16 UNC thread standard with a thread length of 1.25 inches and an overall length of 3.125 inches. The assembly includes two nuts and ships with a pre-attached mount plate, making it ready for direct installation onto structural supports, strut, or framing. Licensed plumbers, pipefitters, and mechanical contractors use this hardware in pipe hanger and support assemblies.

This U-bolt is suited for residential and light commercial pipe support installations where 2-inch nominal pipe must be anchored to a surface or structural member. It is appropriate for use in plumbing rough-in, HVAC refrigerant or condensate line support, and general mechanical piping systems. The hot galvanized finish makes it a practical choice in damp utility rooms, crawlspaces, and outdoor mechanical enclosures where bare steel hardware would corrode prematurely.

Key Features

• Round U-bolt profile fits 2-inch nominal pipe
• 3/8-16 UNC thread with 1.25-inch thread length for secure nut engagement
• C-1010 steel construction with hot galvanized finish for corrosion resistance
• Includes mount plate and two nuts — no additional hardware required
• Overall length of 3.125 inches accommodates standard pipe clearance
• Width of 2.5 inches matches 2-inch pipe OD seating geometry

Compatibility

Designed as an OEM-style replacement or new-installation component for 2-inch nominal pipe support assemblies in mechanical, plumbing, and HVAC piping systems.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or mechanical contractors following IPC and IFGC support spacing requirements. Shut off and depressurize any piping system before repositioning or adding supports. Ensure the mount plate is seated flush against the mounting surface before tightening nuts evenly on both legs of the U-bolt. Do not over-tighten — excessive torque on galvanized fasteners can crack the zinc coating and compromise corrosion protection.