1/4 x 1/8 in (8 x 6 mm) Hexagon Head Bush, NPT, Black | PB0806
Available
This AAP hexagon head bush is a forged carbon steel fitting with NPT thread and a black finish. It is supplied in 34 sizes, 1/4 x 1/8 in (8 x 6 mm) to 4 x 3 in (100 x 80 mm).
A bush reduces a threaded port from a larger size to a smaller one. The size is given as the larger thread first, then the smaller, for example 1/2 x 1/4. A threaded bush is normally male on the outside and female on the inside, and this one has a hexagon head for a spanner. AAP does not state the thread gender, so confirm it with AIMS if it matters. A is its length and B is the width of the hexagon head, as lettered on the AAP drawing.
AAP rates its threaded high pressure fittings at 3000 lb (manufacturer-stated). AAP's pressure and temperature chart for screwed and socket welding fittings lists 3000 lb fittings at 3000 psi (about 20.7 MPa) from -20 to 100 degrees F (-29 to 38 degrees C), reducing to 355 psi (about 2.4 MPa) at 1000 degrees F (538 degrees C). AAP lists ASTM A105 carbon steel forgings among the standards for the range.
Where this product is used
- High pressure threaded pipework in carbon steel, as listed by AAP for the 3000 lb range
- Reducing a female threaded port to a smaller thread
- Carbon steel pipework where a spanner flat is needed to tighten the bush
Features
- 34 sizes, 1/4 x 1/8 in (8 x 6 mm) to 4 x 3 in (100 x 80 mm)
- 3000 lb forged carbon steel, ASME B16.11-2009 (manufacturer-stated)
- NPT, black
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Product | Hexagon head bush, forged carbon steel |
| Thread | NPT taper threads to ANSI B1.20.1 (manufacturer-stated) |
| Finish | Black |
| Rating (manufacturer-stated) | 3000 lb, threaded end |
| Applicable standard (manufacturer-stated) | ASME B16.11-2009 |
| Material | Carbon steel forging (AAP lists ASTM A105 among the standards for the range, manufacturer-stated) |
| Marking (manufacturer-stated) | Sizes 3/8 in and under: brand only. 1/2 in to 4 in: brand, material, heat number, B16, pressure and size |
| Sizes | 1/4 x 1/8 in (8 x 6 mm) to 4 x 3 in (100 x 80 mm) (34 sizes) |
Options and part numbers
| Size | Part number | Length A (mm) | Hex width B (mm) | Weight (kg) |
|---|---|---|---|---|
| 1/4 x 1/8 in (8 x 6 mm) | PB0806 | 17 | 16 | 0.01 |
| 3/8 x 1/8 in (10 x 6 mm) | PB1006 | 17 | 18 | 0.03 |
| 3/8 x 1/4 in (10 x 8 mm) | PB1008 | 17 | 18 | 0.02 |
| 1/2 x 1/8 in (15 x 6 mm) | PB1506 | 19 | 22 | 0.05 |
| 1/2 x 1/4 in (15 x 8 mm) | PB1508 | 19 | 22 | 0.05 |
| 1/2 x 3/8 in (15 x 10 mm) | PB1510 | 19 | 22 | 0.03 |
| 3/4 x 1/4 in (20 x 8 mm) | PB2008 | 22 | 27 | 0.1 |
| 3/4 x 3/8 in (20 x 10 mm) | PB2010 | 22 | 27 | 0.08 |
| 3/4 x 1/2 in (20 x 15 mm) | PB2015 | 22 | 27 | 0.06 |
| 1 x 1/4 in (25 x 8 mm) | PB2508 | 25 | 35 | 0.19 |
| 1 x 3/8 in (25 x 10 mm) | PB2510 | 25 | 35 | 0.17 |
| 1 x 1/2 in (25 x 15 mm) | PB2515 | 25 | 35 | 0.15 |
| 1 x 3/4 in (25 x 20 mm) | PB2520 | 25 | 35 | 0.11 |
| 1-1/4 x 1/2 in (32 x 15 mm) | PB3215 | 28 | 46 | 0.3 |
| 1-1/4 x 3/4 in (32 x 20 mm) | PB3220 | 28 | 46 | 0.28 |
| 1-1/4 x 1 in (32 x 25 mm) | PB3225 | 28 | 46 | 0.21 |
| 1-1/2 x 1/2 in (40 x 15 mm) | PB4015 | 29 | 50 | 0.45 |
| 1-1/2 x 3/4 in (40 x 20 mm) | PB4020 | 29 | 50 | 0.41 |
| 1-1/2 x 1 in (40 x 25 mm) | PB4025 | 29 | 50 | 0.33 |
| 1-1/2 x 1-1/4 in (40 x 32 mm) | PB4032 | 29 | 50 | 0.2 |
| 2 x 1/2 in (50 x 15 mm) | PB5015 | 31 | 65 | 0.83 |
| 2 x 3/4 in (50 x 20 mm) | PB5020 | 31 | 65 | 0.76 |
| 2 x 1 in (50 x 25 mm) | PB5025 | 31 | 65 | 0.7 |
| 2 x 1-1/4 in (50 x 32 mm) | PB5032 | 31 | 65 | 0.55 |
| 2 x 1-1/2 in (50 x 40 mm) | PB5040 | 31 | 65 | 0.43 |
| 2-1/2 x 1-1/2 in (65 x 40 mm) | PB6540 | 37 | 75 | 0.68 |
| 2-1/2 x 2 in (65 x 50 mm) | PB6550 | 37 | 75 | 0.61 |
| 3 x 1 in (80 x 25 mm) | PB8025 | 38 | 90 | 1.94 |
| 3 x 1-1/2 in (80 x 40 mm) | PB8040 | 38 | 90 | 1.86 |
| 3 x 2 in (80 x 50 mm) | PB8050 | 38 | 90 | 1.49 |
| 3 x 2-1/2 in (80 x 65 mm) | PB8065 | 38 | 90 | 1.3 |
| 4 x 2 in (100 x 50 mm) | PB9450 | 45 | 115 | 3.44 |
| 4 x 2-1/2 in (100 x 65 mm) | PB9465 | 45 | 115 | 3.76 |
| 4 x 3 in (100 x 80 mm) | PB9480 | 45 | 115 | 2.12 |
A and B are the dimensions lettered on the AAP drawing, in millimetres.
Selecting the right option
Choose the size and thread to match your pipework (NPT or BSPT cannot be mixed), and check the thread gender at each end against the fitting it joins. Sizes are listed as the larger thread first, then the smaller.
Related products
See also AAP 3000lb Hexagon Plug, NPT, Black, AAP 3000lb Reducing Hexagon Nipple, NPT, Black, AAP 3000lb Hexagon Nipple, NPT, Black and AAP 3000lb 90 Degree Male-Female Threaded Elbow, NPT, Black.
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1/4" x 1/8"
Model Number: PB0806
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1/2" x 1/8"
Model Number: PB1506
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1/2" x 1/4"
Model Number: PB1508
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1/2" x 3/8"
Model Number: PB1510
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1" x 1/4"
Model Number: PB2508
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1" x 3/8"
Model Number: PB2510
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1" x 1/2"
Model Number: PB2515
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1" x 3/4"
Model Number: PB2520
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1-1/4" x 1/2"
Model Number: PB3215
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1-1/4" x 3/4"
Model Number: PB3220
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1-1/4" x 1"
Model Number: PB3225
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1-1/2" x 1/2"
Model Number: PB4015
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1-1/2" x 3/4"
Model Number: PB4020
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1-1/2" x 1"
Model Number: PB4025
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1-1/2" x 1-1/4"
Model Number: PB4032
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2" x 1/2"
Model Number: PB5015
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2" x 3/4"
Model Number: PB5020
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2" x 1"
Model Number: PB5025
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2" x 1-1/4"
Model Number: PB5032
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2" x 1-1/2"
Model Number: PB5040
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2-1/2" x 1-1/2"
Model Number: PB6540
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2-1/2" x 2"
Model Number: PB6550
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3/8" x 1/8"
Model Number: PB1006
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3/8" x 1/4"
Model Number: PB1008
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3/4" x 1/4"
Model Number: PB2008
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3/4" x 3/8"
Model Number: PB2010
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3/4" x 1/2"
Model Number: PB2015
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3" x 1"
Model Number: PB8025
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3" x 1-1/2"
Model Number: PB8040
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3" x 2"
Model Number: PB8050
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3" x 2-1/2"
Model Number: PB8065
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4" x 2"
Model Number: PB9450
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4" x 2-1/2"
Model Number: PB9465
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4" x 3"
Model Number: PB9480
