Gibraltar GIB53701 Round U-bolt 2-1/2 Inch Pipe Steel

Product Description

The GIBRALTAR GIB53701 is a round U-bolt with a mount plate designed to secure 2-1/2 inch pipe in mechanical, plumbing, and HVAC piping installations. Manufactured from C-1010 steel with a hot galvanized finish, this fastener resists corrosion in exposed and semi-exposed environments. The 1/2-13 UNC thread pattern and 1-5/8 inch thread length provide solid clamping engagement, and the package includes two nuts for immediate installation. Plumbers, pipefitters, and HVAC mechanics use this type of U-bolt when a rigid pipe anchor with a flat mounting surface is required. The integrated mount plate distributes load and simplifies attachment to structural members or equipment frames.

This U-bolt is suited for residential and light commercial applications where 2-1/2 inch pipe must be anchored to a wall, beam, or equipment skid. Typical uses include gas line support, refrigerant piping hangers, hydronic heating runs, and general plumbing rough-in. The hot galvanized finish makes it appropriate for damp mechanical rooms, outdoor-adjacent spaces, and other environments where bare steel would corrode prematurely. The mount plate style is commonly specified when a flush, surface-mounted pipe anchor is preferred over a threaded rod hanger.

Key Features

• Round U-bolt profile sized for 2-1/2 inch pipe outside diameter
• Integrated mount plate for flat-surface attachment without additional hardware
• 1/2-13 UNC thread, 1-5/8 inches of thread length for full nut engagement
• C-1010 steel construction with hot galvanized finish for corrosion resistance
• Includes two nuts — ready to install out of the package
• Overall length of 4-1/2 inches with a 3 inch width

Compatibility

Designed as an OEM-style pipe support fastener for 2-1/2 inch pipe in standard inch-measurement plumbing, HVAC, and mechanical piping systems.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or HVAC mechanics in accordance with applicable IPC or IFGC support-spacing requirements. Shut off and depressurize the pipe system before repositioning or replacing any pipe anchor. Ensure the mounting surface is structurally adequate to carry the combined weight of the pipe, fluid, and fitting. Do not overtighten the nuts beyond snug-plus-firm contact, as distortion of the pipe wall can result.