Gibraltar GIB51765 Round U-bolt 8 Inch Pipe Stainless

Product Description

The GIBRALTAR GIB51765 is a round U-bolt designed to secure 8-inch pipe in mechanical, plumbing, and industrial piping installations. Built from 304 stainless steel, it offers corrosion resistance suitable for wet, outdoor, and chemically exposed environments. The bolt features a 5/8-11 UNC thread with a 3-3/4 inch thread length, giving technicians sufficient engagement for proper nut seating and torque. At 2.24 pounds, it is a solid, heavy-duty fastener intended for professional installation. Each unit ships without a mount plate and includes four nuts, making it ready for use with existing channel or structural support hardware.

This U-bolt is used in residential and commercial piping systems where 8-inch pipe must be anchored to structural supports, hangers, or framing. Typical applications include HVAC supply and return mains, large-diameter plumbing runs, and industrial process piping. It is installed by licensed plumbers, pipefitters, and mechanical contractors working on pipe support and restraint assemblies. The 304 stainless steel construction makes it a common choice in corrosive or high-moisture environments where carbon steel hardware is not appropriate.

Key Features

• 304 stainless steel construction for corrosion resistance in wet and outdoor environments
• 5/8-11 UNC thread standard for broad fastener compatibility
• 3-3/4 inch thread length provides adequate engagement depth for secure nut seating
• Sized for 8-inch pipe with an 8-3/4 inch interior width
• Includes four nuts — no additional hardware required for basic installation
• Ships without mount plate for use with existing structural or channel support

Compatibility

Designed as an OEM-style pipe support fastener for 8-inch nominal pipe, compatible with standard UNC threaded hardware and common channel or structural support systems.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable mechanical and plumbing codes such as the IPC or IFGC where pipe support spacing and restraint requirements apply. Power down or depressurize any active system before adding or adjusting pipe supports. Use appropriately rated wrenches to seat the included nuts evenly on both threaded legs to avoid cocking or uneven load on the pipe. Do not over-torque stainless steel fasteners, as galling can occur — use an anti-seize lubricant on the threads where permitted by the application.