Gibraltar GIB51515 Round U-bolt 1 in Pipe 3/8-16 Unc

Product Description

The GIBRALTAR GIB51515 is a round U-bolt designed to secure 1-inch pipe to structural supports in plumbing, HVAC, and general mechanical installations. Manufactured from C1010 steel with a zinc-plated finish for corrosion resistance, this U-bolt features 3/8-16 UNC threading with a 2-3/8 inch thread length and an overall length of 3-7/16 inches. The 1-3/8 inch interior width provides a snug fit around standard 1-inch pipe. Each unit ships with four nuts included, making it ready for immediate installation without sourcing additional hardware. Plumbers, pipefitters, and HVAC technicians commonly install this type of fastener in pipe hanger and support applications.

The GIB51515 is suited for residential and light commercial pipe support applications where 1-inch pipe must be anchored to framing, unistrut, or structural steel. It is sold without a mount plate, making it appropriate for installations where the fastener passes through a bracket, beam, or pre-drilled support surface. Typical applications include domestic water supply lines, refrigerant piping support, and hydronic system pipe runs where secure, vibration-resistant anchoring is required.

Key Features

• Round U-bolt profile sized for 1-inch pipe with 1-3/8 inch interior width
• 3/8-16 UNC thread standard with 2-3/8 inch thread length
• C1010 steel construction with zinc-plated finish for corrosion resistance
• Includes four nuts — no additional hardware required
• Sold without mount plate for use with existing bracket or support structure
• Overall length of 3-7/16 inches for standard pipe support depth

Compatibility

Designed as an OEM-style replacement or new-installation fastener for 1-inch pipe support applications in plumbing, HVAC, and mechanical piping systems.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or HVAC technicians. Shut off and depressurize the piping system before working on or near supported pipe runs. Ensure the supporting structure is rated for the load before fastening. Tighten nuts evenly on both threaded legs to avoid cocking the U-bolt and to maintain even clamping force around the pipe.