Gibraltar GIB51710 Round U-bolt 3/8-16 Unc 3/4 in Pipe SS304

Product Description

The GIBRALTAR GIB51710 is a round U-bolt designed to secure 3/4-inch pipe without a mount plate. Manufactured from 304 stainless steel, this fastener delivers corrosion resistance suitable for wet, outdoor, and chemically exposed environments common in plumbing, HVAC piping, and mechanical system installations. The U-bolt features a 3/8-16 UNC thread with a 2-3/8-inch thread length and an overall length of 3-5/16 inches. A width of 1-1/8 inches matches the pipe saddle geometry for 3/4-inch pipe. Four nuts are included, providing hardware for a complete two-sided mounting assembly. Licensed tradespeople and mechanical contractors reach for this type of fastener when securing pipe runs to structural members, unistrut, or framing.

This U-bolt is suited for residential and light commercial applications where 3/4-inch pipe must be anchored to a fixed structure. Typical installations include domestic water supply lines, refrigerant line sets, small-diameter gas piping, and hydronic heating runs. The absence of a mount plate makes this fitting appropriate when the installer is using a separate backplate, strut channel, or surface-mount bracket already in place. The 3/8-16 UNC thread standard is widely compatible with standard hex nuts and lock nuts stocked at most supply houses.

Key Features

• 304 stainless steel construction resists rust and corrosion in wet or outdoor service
• 3/8-16 UNC thread standard for broad hardware compatibility
• 2-3/8-inch thread length provides adequate engagement for thick mounting surfaces or double-nut lockdown
• Round shape conforms to 3/4-inch pipe OD without mount plate for flexible mounting configurations
• Four nuts included — ready for installation without additional hardware
• Overall length of 3-5/16 inches suits standard pipe-to-structure clearances

Compatibility

Designed for use with 3/4-inch nominal pipe in standard plumbing, HVAC, and mechanical piping applications. Mount-plate-free design requires a separate backplate or strut channel at the install point.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or HVAC mechanics. Isolate and depressurize any pipe being worked on before mounting hardware is applied. Thread engagement should be verified on both legs of the U-bolt before tightening nuts; apply nuts evenly to avoid cocking the bolt against the pipe wall. Local mechanical codes including IPC and IFGC specify pipe support spacing intervals — consult the applicable code for the required hanger frequency based on pipe material and diameter.