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The NATIONAL MARKER N245019 is a zinc-plated square U bolt designed for securing loads and components to rectangular wood and metal surfaces. Manufactured from steel wire with a zinc finish for corrosion resistance, this U bolt measures 3/8 inch in diameter, 3-5/8 inches in width, and 6 inches in length. Each unit ships assembled and includes a mounting plate along with two hex nuts, making it ready for immediate installation. Plumbers, electricians, HVAC technicians, and general trade contractors use square U bolts like this for pipe hangers, conduit supports, and structural fastening applications where a rectangular bite is needed against the workpiece.
This U bolt is suited for both residential and light commercial applications. Its square-bend geometry provides positive contact against rectangular tubing, strut, and wood framing members, reducing the risk of slippage under load. The included hex nuts and plate allow for direct installation without sourcing additional hardware. Typical installation scenarios include securing pipe runs, conduit, and mechanical components to wood joists, metal framing, or unistrut-style channel.
Designed as an OEM-style fastening component for use with rectangular wood and metal structural members in mechanical, plumbing, and electrical support applications.
Installation is typically performed by plumbers, electricians, or general mechanical contractors as part of pipe or conduit support work. Ensure the mounting surface is structurally sound and that the U bolt is oriented squarely before tightening hex nuts. Follow applicable codes such as NEC or IPC for support spacing and fastener requirements. Do not overtighten hex nuts on plastic pipe or conduit, as this may cause deformation.
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