Ham-let 3500079 Compression Tube Nut Fnpt 316 Ss

Product Description

The HAM-LET 3500079 is a compression tube nut designed for use in high-purity and industrial fluid and gas systems. It threads onto the body of a compression fitting to compress the ferrule against the tubing, creating a leak-tight mechanical seal. Machined from 316 stainless steel, this nut provides corrosion resistance in demanding environments including wet, chemical, and high-pressure service. The 1-20 inch thread size and FNPT end connection make it a precise, specification-driven component suited for installation by licensed plumbers, pipefitters, and instrumentation technicians working with compression-style tube fittings on 18 mm outside diameter tubing.

This compression tube nut is used in residential and commercial instrumentation, process piping, and fluid control applications where stainless steel compression fittings are specified. Typical installation scenarios include instrument tubing runs, chemical feed lines, and high-purity gas distribution systems. The nut mates with compatible compression fitting bodies and ferrules to complete the assembly. It is also cross-referenced to Swagelok part number SS-18M2-1, making it a recognized replacement in systems originally built with that fitting standard.

Key Features

• 316 stainless steel construction for corrosion resistance in wet and chemical service
• 1-20 inch thread size with FNPT end connection for secure engagement
• Designed for 18 mm outside diameter tubing compression assemblies
• Cross-references to Swagelok part number SS-18M2-1
• Sold individually, no minimum order quantity beyond single unit

Compatibility

Designed for use with compression fitting bodies and ferrules sized for 18 mm outside diameter tubing. Cross-references to Swagelok part number SS-18M2-1 for systems originally specified with that component.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or instrumentation technicians familiar with compression fitting assembly. Ensure the tubing is cut square, deburred, and fully inserted before tightening the nut. Follow the fitting manufacturer's recommended turn-past-finger-tight procedure for initial assembly. Depressurize and isolate the line completely before disassembling or replacing any compression fitting component.