Value Collection U400KSS Round U-bolt 4 in Pipe Stainless

Product Description

The VALUE COLLECTION U400KSS is a round U-bolt designed for clamping mount applications on 4-inch pipe. It features a 3/8-16 UNC thread size with a 1.5-inch thread length and a 4.17-inch inside width. Constructed from 304 stainless steel, it delivers corrosion resistance suited to wet, outdoor, or chemically active environments. The hardware includes two serrated flange nuts, which provide secure clamping without requiring separate flat washers. Plumbers, pipefitters, HVAC technicians, and general mechanical contractors use this fastener to anchor pipe runs to structural supports in both commercial and residential installations.

This U-bolt is intended for use with 4-inch nominal pipe and mounts via a clamping configuration against a flat or structural surface. The inch-measurement thread system and standard UNC thread form make it compatible with common hand tools and hardware found on most job sites. It is well suited for pipe support work in mechanical rooms, utility corridors, rooftop equipment installations, and anywhere corrosion-resistant hardware is specified. The included serrated flange nuts eliminate the need to source separate fasteners, keeping installation straightforward.

Key Features

• 304 stainless steel construction provides corrosion resistance in wet and outdoor environments
• 3/8-16 UNC thread size with 1.5-inch thread length for secure clamping engagement
• 4.17-inch inside width fits 4-inch nominal pipe
• Includes two serrated flange nuts for a complete, ready-to-install fastener assembly
• Clamping mount style seats against flat structural surfaces without welding or special brackets
• Inch measurement system with standard UNC thread form for compatibility with common trade tools

Compatibility

Designed as an OEM-style clamping support fastener for 4-inch nominal pipe applications in plumbing, HVAC, and mechanical piping systems.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or mechanical contractor in accordance with applicable IPC or IFGC support spacing requirements. Shut off flow and depressurize the pipe before repositioning any existing clamps or supports. Use a properly sized wrench to tighten the included serrated flange nuts evenly on both legs of the U-bolt to prevent cocking or uneven clamping load. Do not over-torque stainless steel hardware, as galling can occur without proper lubrication.