1BU
Tube OD 1/16, Thread Tube OD 1/16
- AX
- 0.68
- C
- 0.43
- D
- 0.34
- E
- 0.05
- F Hex
- 7/16
- G
- 5/16
- H
- 0.94
- HX
- 0.53
- BHEAD Hole Drill
- 13/64
- Max BHEAD Thick
- 0.12
Tube Fittings
Bulk Head Union
Imperial Tube OD x Imperial Tube OD
Bulk head unions are used to connect fractional tubes through panels or bulkheads in instrumentation and process piping systems.
Product Image
Technical Drawing
Tube Fitting Product
Short Product Description
Bulk head unions are used to connect fractional tubes through panels or bulkheads in instrumentation and process piping systems.
Panel Mount Connection
Supports tube routing through panels, enclosures, and bulkhead-mounted instrument layouts.
Tube-to-Tube Connection
Connects fractional tube runs through bulkhead-mounted layouts.
Instrumentation Duty
Designed for clean routing and dependable installation in instrument and process piping systems.
Imperial Sizes
Bulk Head Union Size Chart
Showing 10 of 10 sizes - 0 selected
| Part No. | Tube OD (T) inch | A | AX | C | D | E | F Hex | G | H | HX | BHEAD Hole Drill | Max BHEAD Thick | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1BU | 1/16 | 1.24 | 0.68 | 0.43 | 0.34 | 0.05 | 7/16 | 5/16 | 0.94 | 0.53 | 13/64 | 0.12 | |
| 2BU | 1/8 | 2.02 | 1.23 | 0.60 | 0.50 | 0.09 | 7/16 | 7/16 | 1.5 | 0.97 | 21/64 | 0.50 | |
| 3BU | 3/16 | 2.11 | 1.26 | 0.63 | 0.54 | 0.12 | 9/16 | 7/16 | 1.59 | 1 | 25/64 | 0.50 | |
| 4BU | 1/4 | 2.27 | 1.32 | 0.70 | 0.60 | 0.19 | 5/8 | 9/16 | 1.03 | 1.03 | 29/64 | 0.40 | |
| 5BU | 5/16 | 2.39 | 1.41 | 0.73 | 0.64 | 0.25 | 11/16 | 5/8 | 1.81 | 1.12 | 33/64 | 0.44 | |
| 6BU | 3/8 | 2.45 | 1.45 | 0.76 | 0.66 | 0.28 | 3/4 | 11/16 | 1.87 | 1.16 | 37/64 | 0.44 | |
| 8BU | 1/2 | 2.80 | 1.65 | 0.86 | 0.90 | 0.41 | 7/8 | 7/8 | 2 | 1.25 | 49/64 | 0.50 | |
| 10BU | 5/8 | 2.86 | 1.68 | 0.86 | 0.96 | 0.50 | 1-1/16 | 1 | 2.06 | 1.28 | 57/64 | 0.50 | |
| 12BU | 3/4 | 3.11 | 1.87 | 0.86 | 0.96 | 0.63 | 1-3/16 | 1-1/8 | 2.31 | 1.47 | 1-1/64 | 0.66 | |
| 14BU | 7/8 | 3.33 | 2.09 | 0.86 | 1.02 | 0.72 | 1-3/8 | 1-1/4 | 2.53 | 1.69 | 1-9/64 | 0.66 |
2BU
Tube OD 1/8, Thread Tube OD 1/8
- AX
- 1.23
- C
- 0.60
- D
- 0.50
- E
- 0.09
- F Hex
- 7/16
- G
- 7/16
- H
- 1.5
- HX
- 0.97
- BHEAD Hole Drill
- 21/64
- Max BHEAD Thick
- 0.50
3BU
Tube OD 3/16, Thread Tube OD 3/16
- AX
- 1.26
- C
- 0.63
- D
- 0.54
- E
- 0.12
- F Hex
- 9/16
- G
- 7/16
- H
- 1.59
- HX
- 1
- BHEAD Hole Drill
- 25/64
- Max BHEAD Thick
- 0.50
4BU
Tube OD 1/4, Thread Tube OD 1/4
- AX
- 1.32
- C
- 0.70
- D
- 0.60
- E
- 0.19
- F Hex
- 5/8
- G
- 9/16
- H
- 1.03
- HX
- 1.03
- BHEAD Hole Drill
- 29/64
- Max BHEAD Thick
- 0.40
5BU
Tube OD 5/16, Thread Tube OD 5/16
- AX
- 1.41
- C
- 0.73
- D
- 0.64
- E
- 0.25
- F Hex
- 11/16
- G
- 5/8
- H
- 1.81
- HX
- 1.12
- BHEAD Hole Drill
- 33/64
- Max BHEAD Thick
- 0.44
6BU
Tube OD 3/8, Thread Tube OD 3/8
- AX
- 1.45
- C
- 0.76
- D
- 0.66
- E
- 0.28
- F Hex
- 3/4
- G
- 11/16
- H
- 1.87
- HX
- 1.16
- BHEAD Hole Drill
- 37/64
- Max BHEAD Thick
- 0.44
8BU
Tube OD 1/2, Thread Tube OD 1/2
- AX
- 1.65
- C
- 0.86
- D
- 0.90
- E
- 0.41
- F Hex
- 7/8
- G
- 7/8
- H
- 2
- HX
- 1.25
- BHEAD Hole Drill
- 49/64
- Max BHEAD Thick
- 0.50
10BU
Tube OD 5/8, Thread Tube OD 5/8
- AX
- 1.68
- C
- 0.86
- D
- 0.96
- E
- 0.50
- F Hex
- 1-1/16
- G
- 1
- H
- 2.06
- HX
- 1.28
- BHEAD Hole Drill
- 57/64
- Max BHEAD Thick
- 0.50
12BU
Tube OD 3/4, Thread Tube OD 3/4
- AX
- 1.87
- C
- 0.86
- D
- 0.96
- E
- 0.63
- F Hex
- 1-3/16
- G
- 1-1/8
- H
- 2.31
- HX
- 1.47
- BHEAD Hole Drill
- 1-1/64
- Max BHEAD Thick
- 0.66
14BU
Tube OD 7/8, Thread Tube OD 7/8
- AX
- 2.09
- C
- 0.86
- D
- 1.02
- E
- 0.72
- F Hex
- 1-3/8
- G
- 1-1/4
- H
- 2.53
- HX
- 1.69
- BHEAD Hole Drill
- 1-9/64
- Max BHEAD Thick
- 0.66