METALOK INDUSTRIES

NUT

NUT

The Nut is a crucial component of tube fittings, used to secure the ferrule(s) and ensure a tight, leak-free connection between tubing and fittings. Designed for use with METALOK-type compression systems, the Nut applies the necessary axial force to the ferrules during installation, enabling them to grip and seal around the tube effectively. Precision-machined for reliable performance, Nuts are available in a wide range of sizes from 1/8” to 2” and 3mm to 50mm. They are manufactured from high-strength, corrosion-resistant materials such as Stainless Steel (SS), Brass, Duplex, Monel, and Hastelloy to suit a variety of applications, including instrumentation, chemical processing, and hydraulic systems.

  • Engineered to work with METALOK tube fitting systems.
  • Precision threads ensure smooth installation and consistent sealing force.
  • Available in a wide range of sizes and materials.
  • Designed for high-pressure, high-temperature environments.
  • Corrosion- and vibration-resistant construction.
  • Ensures reliable and leak-tight tube-to-fitting connections.
  • Easy to install and remove without damaging the tubing.
  • Offers long-term durability in demanding applications.
  • Supports consistent ferrule compression for effective sealing.
  • Compatible with a broad range of industrial tubing systems.
Part NumberT
(Tube OD)
L
(mm)
H
(Inch)
1-N1/16″7.95/16
2-N1/8″11.97/16
3-N3/16″11.91/2
4-N1/4″12.79/16
5-N5/16″13.55/8
6-N3/8″14.211/16
8-N1/2″17.57/8
10-N5/8″17.51
12-N3/4″17.51.1/8
14-N7/8″17.51.1/4
16-N1″20.6

1.1/2

Part NumberT
(Tube OD)
3M-FF3mm
6M-FF6mm
8M-FF8mm
10M-FF10mm
12M-FF12mm
14M-FF14mm
15M-FF15mm
16M-FF16mm
18M-FF18mm
20M-FF20mm
22M-FF22mm
25M-FF25mm

Working