Bulkhead Connectors

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).

Female Bulkhead Connectors

Metric Dimensions (mm)

T o/d P M D F G Nut F1 H J L Max Panel L1 Panel Hole
6 1/8 10 17 14 14 17 39 35 26 12 48 11.6
6 1/4 15 17 14 14 17 44 35 26 12 53 11.6
10 1/4 15 18 17 19 19 47 38 29.5 10 55.5 16.4
12 3/8 16 24 22 22 24 50 43 32 14 61 19.5
12 1/2 20 24 27 22 24 58 43 32 14 69 19.5

Imperial Dimensions (inch)

T o/d P M D F G Nut F1 H J L L1 Panel Hole Max Panel
1/4 1/8 .39 60 5/8 9/16 5/8 1.56 1.32 1.03 1.85 29/64 .40
1/4 1/4 .59 .60 3/4 9/16 5/8 1.75 1.32 1.03 2.04 29/64 .40
3/8 1/4 .59 .66 3/4 11/16 3/4 1.88 1.45 1.16 2.17 37/64 .40
1/2 3/8 .59 .90 15/16 7/8 15/16 2.03 1.65 1.25 2.43 49/64 .50
1/2 1/2 .78 .90 1-1/16 7/8 15/16 2.22 1.65 1.25 2.62 49/64 .50

Male Bulkhead Connectors

Metric Dimensions (mm)

T o/d P M D F G Nut F1 H J L L1 Panel Hole Max Panel
6 1/8 10 17 14 14 17 42 35 26 51 11.6 12
6 1/4 15 17 14 14 17 47 35 265 56 11.6 12
10 1/4 15 18 17 19 19 52 38 29.5 60.5 16.4 10
12 1/2 20 24 22 22 24 60 43 32 71 19.5 14

Imperial Dimensions (inch)

T o/d P M D F G Nut F1 H J L L1 Panel Hole Max Panel
1/4 1/8 .38 .60 5/8 9/16 5/8 1.66 1.32 1.03 1.95 29/64 .40
1/4 1/4 .56 .60 5/8 9/16 5/8 1.81 1.32 1.03 2.10 29.64 .40
3/8 1/4 .56 .66 3/4 11/16 3/4 1.97 1.45 1.16 2.26 37/64 .40
1/2 1/2 .75 .90 15/16 7/8 15/16 2.28 1.65 1.25 2.68 49/64 .50
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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