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 L1 Length C D F G
Nut
H Body
6 44 19 17 14 14 26
8 46 20 18 14 17 28
10 49 20.5 18 17 19 30
12 54 23 24 22 22 32
16 56 24 26 24 27 32
18 58 24 26 27 30 34
25 72 31 .36 36 41 39

Imperial Dimensions (inch)

T o/d L1 Length C D F G
Nut
H
Body
1/8 1.44 .63 .53 1/2 7/16 .88
3/6 1.47 .63 .54 1/2 1/2 .95
1/4 1.61 .70 .60 1/2 9/16 1.03
5/16 1.68 .73 .64 9/16 5/8 1.10
3/8 1.77 .76 .66 5/8 11/16 1.19
1/2 2.02 .86 .90 13/16 7/8 1.22
5/8 2.05 .86 .96 15/16 1 1.25
3/4 2.11 .86 .96 1-1/16 1-1/8 1.31
1 2.55 1.04 1.23 1-3/8 1-1/2 1.59
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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