General Details

Double Ferrule Stainless Steel Compression Fittings have been designed and developed to meet the demands for reliability and high precision standards. The Alco-Lok range includes Imperial and Metric sizes (see data sheets for all sizes).

Metric Dimensions (mm)

T o/d P M F H
6 1/8 10 14 31
6 1/4 14 19 35
8 1/4 14 19 36
8 3/8 14 22 36
8 1/2 22 27 44
10 3/8 14 22 37
10 1/2 22 27 46
12 3/8 14 22 42
12 1/2 22 27 50
16 3/8 14 22 45
16 1/2 22 27 52
18 1/2 22 27 53
18 3/4 22 36 53

 

Imperial Dimensions (inch)

T o/d P M F H
1/8 1/8 .39 9/16 1-5/32
1/4 1/4 .39 9/16 1-5/32
1/4 1/4 .59 3/4 1-11/32
5/16 1/4 .59 3/4 1-7/16
5/16 3/8 .59 7/8 1-17/32
3/8 1/4 .59 3/4 1-13/32
3/8 3/8 .59 7/8 1-15/32
3/8 1/2 .78 1-1/16 1-21/32
1/2 1/4 .59 13/16 1-5/8
1/2 3/8 .59 7/8 1-11/16
1/2 1/2 .78 1-1/16 1-7/8
3/4 1/2 .78 1-1/16 2
3/4 3/4 .81 1-5/16 2-1/16
Features
  • All components from the same material
  • High pressure applications
  • Seal pressures that will burst the tubing
  • Impulse and vibration resistant
  • Repeated make and break connections
  • Nut threads are silver plated to prevent galling
  • No tube rotation or torque transmission on make up
Materials
Ali Bronze – NES 833 Alloy C276 / C22 Alloy 20 Alloy 400
Alloy 625 Alloy 825 F44 (S31254) F51 (S31803)
F53 (S32750) F55 (S32760) Titanium 904L
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