Alco-Lok Accessories

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).

Plugs

Metric Dimensions (mm)

T o/d G Nut
6 14
8 17
10 19
12 22
16 27
18 30
25 41

Imperial Dimensions (inch)

T o/d G Nut
1/8 7/16
3/16 1/2
1/4 9/16
5/16 5/8
3/8 11/16
1/2 7/8
5/8 1
3/4 1-1/8
1 1-1/2

 

Caps

Metric Dimensions (mm)

T o/d L1 Length C D F G Nut H Body
6 25 19 17 14 14 16
8 26 20 18 14 17 17
10 26.5 20.5 18 17 19 18
12 33 23 24 22 22 22
16 35 24 26 24 27 23
18 37 24 26 27 30 25
25 45.5 31 36 36 41 29

 

Imperial Dimensions (inch)

T o/d L1 Length C D Body F G Nut H Body
1/8 .81 .63 .53 1/2 7/16 .53
1/4 .91 .70 .60 1/2 9/16 .62
5/6 .96 .73 .64 9/16 5/8 .67
3/8 1.01 .76 .66 5/8 11/16 .72
1/2 1.15 .86 .90 13/16 7/8 .75
5/8 1.18 .86 .96 15/16 1 .78
3/4 1.24 .86 .96 1-1/16 1-1/8 .84
1 1.51 1.04 1.23 1-3/8 1-1/2 1.03

 

Nuts

Metric Dimensions (mm)

T o/d G Nut L
6 14 13
8 17 13.5
10 19 15
12 22 17.5
16 27 17.5
18 30 18
25 41 21

Imperial Dimensions (inch)

T o/d G Nut L
1/8 7/16 .47
3/16 1/2 .47
1/4 9/16 .51
5/16 5/8 .53
3/8 11/16 .57
1/2 7/8 .69
5/8 1 .69
3/4 1-1/8 .69
1 1-1/2 .82

 

Lock Nuts

Metric Dimensions (mm)

G Nut L
17 6
17 6
19 8
24 8
27 9
30 9
41 10

Imperial Dimensions (inch)

G Nut L
.51 .23
.55 .23
.67 .23
.67 .23
.75 .31
.94 .31
1.06 .35
1.18 .35
1.61 .39

Ferrules

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Metric Dimensions (mm)

T o/d Front Ferrule Part No.
6 6mFC
8 8mFC
10 10mFC
12 12mFC
16 16mFC
18 18mFC
25 25mFC

Imperial Dimensions (inch)

T o/d Front Ferrule
1/8 2FC
3/16 3FC
1/4 4FC
5/16 5FC
3/8 6FC
1/2 8FC
5/8 10FC
3/4 12FC
1 16FC
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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