Value Collection SS-TN-FT4 Compression Tube Nut 1/4 in

Product Description

The VALUE COLLECTION SS-TN-FT4 is a stainless steel compression tube nut designed to secure compression fittings on 1/4 inch OD tubing with a 1/4 inch FNPT end connection. Machined from 316 stainless steel to material grade specifications including ASTM A276 and ASTM A479, this nut provides reliable corrosion resistance in demanding fluid and gas line applications. It uses a 7/16-20 UNF thread standard and measures 0.5 inches in overall length. Licensed plumbers, HVAC technicians, and instrumentation fitters install this type of hardware when assembling or servicing compression tube assemblies in process, refrigeration, or plumbing systems.

This compression tube nut is suited for use in residential and commercial installations where 1/4 inch OD tubing must be connected to female threaded ports. Common applications include instrumentation lines, refrigerant and pneumatic tubing runs, and hydraulic or fluid transfer systems that require a leak-tight mechanical grip without soldering or flaring. It is sold individually and is compatible with standard compression fitting bodies designed for 1/4 inch OD tube.

Key Features

• 316 stainless steel construction meets ASTM A182, ASTM A213, ASTM A269, ASTM A276, ASTM A479, DIN EN10122-5, and DIN EN10272 standards
• 1/4 inch tube OD sizing for standard compression assembly
• 7/16-20 UNF thread for positive, repeatable engagement
• FNPT end connection integrates directly with female-threaded ports and fittings
• Compact 0.5 inch overall length suits tight-clearance installations
• Swagelok-equivalent form factor — cross-references Swagelok part number SS-402-1

Compatibility

Designed as an OEM-style replacement or service component for compression tube assemblies using 1/4 inch OD tubing with FNPT end connections. Cross-references Swagelok part number SS-402-1 per supplier data.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified instrumentation fitter. Depressurize and isolate the tubing circuit completely before disassembling any compression fitting. Hand-tighten the nut onto the fitting body, then advance with a wrench per the fitting manufacturer's recommended turn count — do not overtighten, as this can deform the ferrule and compromise the seal. Verify there are no leaks under pressure before returning the system to service.