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What is Threaded Bushing
Threaded Bushing is generally made by cutting, forging, and processing hexagonal bars. It is a commonly used accessory for reducing threaded pipes and plays an irreplaceable role in pipe connections.
Threaded reducer bushing to it has two different sized threaded ends to be a versatile fitting that can be used in a variety of applications, including water distribution systems, gas distribution systems, and other industrial applications.
NPT threaded bushing is easy to reinforce and tighten due to its hexagonal shape and there are many types of threads used for connection. The common one is the NPT RC thread connection, which is suitable for connecting various pipelines.
Threaded Bushing Specification
Size range | 1/8"-4"/DN6-DN100 |
Pressure level | Class 3000/6000lbs |
Production standards | ASME B16.11, BS3799, GB/T 14383, |
Thread forms | NPT, PT, BSPP, BSPT, PF |
Shape Type | Hex Head Bushing, Flush Bushing |
NPT Thread Characteristics
Taper angle of 1°47'
Pitch measured in threads per inch.
60° angle between flat crests and troughs.
NPT Threaded Bushing Material
Carbon Steel | ASTM A105, 20# |
Low Temperature | ASTM A350 LF2, 16Mn |
Pipeline Steel | ASTM A694 F42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A182 F11 / 12 / 5 / 9 / 91 / 92 |
Stainless Steel | ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L |
Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
NPT Threaded Bushing Dimension
Normal Size | Length | Head Thickness | Hex Head Across Flats | |
DN | NPS | Amin | Gmin | Fnom |
6 | 1/8 | 10 | - | 11 |
8 | 1/4 | 11 | 3 | 16 |
10 | 3/8 | 13 | 4 | 18 |
15 | 1/2 | 14 | 5 | 22 |
20 | 3/4 | 16 | 6 | 27 |
25 | 1 | 19 | 6 | 36 |
32 | 1¼ | 21 | 7 | 46 |
40 | 1½ | 21 | 8 | 50 |
50 | 2 | 22 | 9 | 65 |
65 | 2½ | 27 | 10 | 75 |
80 | 3 | 28 | 10 | 90 |
100 | 4 | 32 | 13 | 115 |
Installing NPT Threaded Bushing
NPT threaded bushing can be installed by hand or with a wrench. The method of installation will depend on the type of threaded reducer and the application.
Hand-tightened: Threaded reducers that are made of steel or stainless steel can be hand-tightened. This is the most common method of installation for threaded reducers.
Wrench-tightened: Threaded reducers that are made of plastic or other non-ferrous materials must be wrench-tightened. This method of installation is more time-consuming than hand-tightening, but it is often the preferred method for non-ferrous materials.
What is Threaded Bushing
Threaded Bushing is generally made by cutting, forging, and processing hexagonal bars. It is a commonly used accessory for reducing threaded pipes and plays an irreplaceable role in pipe connections.
Threaded reducer bushing to it has two different sized threaded ends to be a versatile fitting that can be used in a variety of applications, including water distribution systems, gas distribution systems, and other industrial applications.
NPT threaded bushing is easy to reinforce and tighten due to its hexagonal shape and there are many types of threads used for connection. The common one is the NPT RC thread connection, which is suitable for connecting various pipelines.
Threaded Bushing Specification
Size range | 1/8"-4"/DN6-DN100 |
Pressure level | Class 3000/6000lbs |
Production standards | ASME B16.11, BS3799, GB/T 14383, |
Thread forms | NPT, PT, BSPP, BSPT, PF |
Shape Type | Hex Head Bushing, Flush Bushing |
NPT Thread Characteristics
Taper angle of 1°47'
Pitch measured in threads per inch.
60° angle between flat crests and troughs.
NPT Threaded Bushing Material
Carbon Steel | ASTM A105, 20# |
Low Temperature | ASTM A350 LF2, 16Mn |
Pipeline Steel | ASTM A694 F42 / 46 / 56 / 60 / 65 |
Alloy Steel | ASTM A182 F11 / 12 / 5 / 9 / 91 / 92 |
Stainless Steel | ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L |
Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
NPT Threaded Bushing Dimension
Normal Size | Length | Head Thickness | Hex Head Across Flats | |
DN | NPS | Amin | Gmin | Fnom |
6 | 1/8 | 10 | - | 11 |
8 | 1/4 | 11 | 3 | 16 |
10 | 3/8 | 13 | 4 | 18 |
15 | 1/2 | 14 | 5 | 22 |
20 | 3/4 | 16 | 6 | 27 |
25 | 1 | 19 | 6 | 36 |
32 | 1¼ | 21 | 7 | 46 |
40 | 1½ | 21 | 8 | 50 |
50 | 2 | 22 | 9 | 65 |
65 | 2½ | 27 | 10 | 75 |
80 | 3 | 28 | 10 | 90 |
100 | 4 | 32 | 13 | 115 |
Installing NPT Threaded Bushing
NPT threaded bushing can be installed by hand or with a wrench. The method of installation will depend on the type of threaded reducer and the application.
Hand-tightened: Threaded reducers that are made of steel or stainless steel can be hand-tightened. This is the most common method of installation for threaded reducers.
Wrench-tightened: Threaded reducers that are made of plastic or other non-ferrous materials must be wrench-tightened. This method of installation is more time-consuming than hand-tightening, but it is often the preferred method for non-ferrous materials.
