Ham-let 3001789 Compression X Fnpt Tube Connector 1/4 in

Product Description

The HAM-LET 3001789 is a straight compression tube connector designed to join 1/4-inch OD tubing to a female NPT threaded port. Built from 316 stainless steel and meeting multiple ASTM and DIN material standards, this fitting is rated for working pressures up to 6600 psi. The overall installed length is 1.41 inches. It is a single-piece connector with compression on one end and FNPT on the other, making it a common choice for instrument tubing, process lines, and high-pressure fluid systems. Licensed plumbers, pipefitters, and instrumentation technicians are the typical installers.

This connector suits high-pressure instrument tubing applications in industrial, commercial, and process environments. The compression end grips 1/4-inch OD tubing without welding or soldering, while the FNPT end threads into a female pipe port. It is suited for systems handling gases, hydraulic fluids, or process media where a leak-tight, reusable connection is required. The operating temperature range runs from -20 degrees F to 37 degrees C, making it appropriate for a broad range of ambient and process conditions.

Key Features

• 316 stainless steel construction resists corrosion in aggressive process environments
• Rated to 6600 psi maximum working pressure for high-pressure instrument and process lines
• Compression x FNPT end connections allow tool-free tubing attachment on the compression side
• Meets ASTM A182, A213, A269, A276, A479 and DIN EN10122-5, DIN EN10272 material standards
• Compact overall length of 1.41 inches suits tight installation spaces
• Compatible Swagelok equivalent part number SS-400-7-4

Compatibility

Designed for use with 1/4-inch OD compression tubing systems connecting to female NPT threaded ports. The Swagelok equivalent part number listed in the supplier data is SS-400-7-4, indicating cross-compatibility with that fitting series.

Installation Notes

Installation is typically performed by licensed pipefitters or instrumentation technicians following applicable process piping codes. Depressurize and isolate the system completely before removing or installing any compression fitting. Hand-tighten the FNPT end with appropriate thread sealant per the system fluid compatibility requirements, then wrench-tighten to seat properly. Do not overtighten the compression nut, as this can deform the ferrule and compromise the seal.