National Mfg N222-323 Square U-bolt Plate 5/16x2 Zinc 10pk

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N222-323 is a zinc-plated square U-bolt plate designed to secure U-bolts in pipe, conduit, and structural fastening applications. Each plate measures 5/16 inches thick by 2 inches wide and provides a flat bearing surface that distributes clamping load evenly across the U-bolt legs. The zinc finish offers corrosion resistance suitable for dry and mildly humid environments. Sold in a bulk pack of 10 units per package, this plate is a standard hardware item used by plumbers, electricians, HVAC technicians, and general contractors during rough-in and support work.

Square U-bolt plates like the N222-323 are used wherever a U-bolt must be anchored against a flat surface — including pipe hangers, conduit straps, tube clamps, and light structural brackets. The 2-inch width accommodates standard U-bolt spans in residential and light commercial installations. The bulk pack of 10 makes it practical for service vans and job-site supply stock where these plates are consumed in multiples during a single rough-in phase.

Key Features

• Zinc plating provides corrosion resistance for indoor and sheltered applications
• Square profile distributes U-bolt clamping load over a flat bearing surface
• 5/16 inch thickness offers solid support without excessive material bulk
• 2 inch width fits standard U-bolt leg spacing for pipe and conduit work
• Bulk pack of 10 units reduces per-unit cost for high-volume installs

Compatibility

Designed as a standard OEM-style replacement or supplemental hardware component for use with matching 5/16 inch by 2 inch U-bolts in pipe support, conduit fastening, and light structural clamping assemblies.

Installation Notes

Installation is performed by plumbers, electricians, or HVAC technicians as part of pipe or conduit support work. Seat the plate flush against the mounting surface before threading nuts onto U-bolt legs to ensure even load distribution. Do not overtighten nuts on zinc-plated hardware, as this can strip threads or crack the plate. Follow applicable code requirements such as NEC or IPC for support spacing and fastener selection.