National Mfg N344-630 Zinc Pipe Clamp 1.625 in

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N344-630 is a zinc pipe clamp designed to secure pipe runs in both interior and exterior installations. Sized for 1.625-inch pipe, this non-welded, pre-assembled clamp ships ready to install without additional fabrication. The zinc construction provides corrosion resistance suitable for damp or exposed environments. Plumbers, pipefitters, and general contractors use this clamp type to support copper, steel, or plastic pipe along walls, ceilings, and structural members. Each package contains 5 clamps, making it practical for multi-point support runs on a single job.

This clamp fits residential and light commercial piping applications where a reliable, code-compatible pipe support is required. Its non-welded construction suits installations where field welding is not practical or permitted. The assembled design reduces installation time, making it useful in tight schedules or high-volume rough-in work. Suitable for use in mechanical rooms, utility spaces, crawlspaces, and exposed exterior runs where corrosion resistance is a factor.

Key Features

• Zinc construction for corrosion resistance in interior and exterior environments
• Sized for 1.625-inch pipe diameter
• Non-welded design — no field welding required
• Pre-assembled and ready to install out of the box
• Sold in a package of 5 clamps
• Suitable for both interior and exterior piping applications

Compatibility

Designed as an OEM-style pipe support clamp for 1.625-inch pipe in residential and light commercial plumbing and mechanical systems.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off flow in the line before positioning clamps on active systems. Use fasteners appropriate for the substrate — concrete anchors for masonry, structural screws for wood framing. Do not overtighten the clamp band, as this can deform plastic pipe or damage pipe coatings.