Threaded Bushing
Threaded Bushing Manufacturer & Supplier
A threaded bushing is a mechanical component used to reduce or adapt the size of a threaded hole. It is typically cylindrical and has both internal and external threads, allowing it to be screwed into a larger threaded hole while providing a smaller threaded hole for another fastener or part.
| Product Attribute | Description |
|---|---|
| Product Name | Threaded Bushing (Hex Head, Reducing, Flush) |
| Function | Connects pipes or fittings of different sizes, reduces or increases thread size, repairs stripped threads, or provides a durable threaded hole in soft materials. |
| Types | – Hex Head Bushing – Reducing Bushing – Flush Bushing – Thread-in – Press-in |
| Material Options | – Stainless Steel (ASTM A182 F304, F316, etc.) – Carbon Steel (ASTM A105) – Alloy Steel (ASTM A182 F11, F22) – Brass (OT58) – Copper Nickel – Inconel – Hastelloy C22 – Bronze – Aluminum |
| Thread Types | – NPT (National Pipe Thread) – BSPP (British Standard Parallel Pipe) – BSPT (British Standard Tapered Pipe) – Metric – Unified (e.g., #8-32, 3/8-16) |
| Pressure Ratings | – Class 2000, 3000, 6000, 9000 (for threaded and socket-weld fittings) – Up to 7500 psi for high-pressure applications |
| Size Range | – NPS 1/8″ to 4″ – Metric: M10 to M50 – Custom sizes available |
| Temperature Range | – Up to 200°C (392°F) for galvanized pipe bushings – Higher for Inconel (high-temperature resistant) |
| Standards Compliance | – ASME B16.11 – ANSI B16.11 – BS 3799 – MSS SP-79, MSS SP-83 – ASTM A182, A312, A403 |
| Installation Method | – Screwed (thread-in) – Press-in – Thermal insertion (for plastics) – Ultrasonic welding (for plastics) – Riveted (for sheet metal) |
| Finish | – Black (70µm thickness) – Galvanized – Tempered (carbon steel, 1100-1300 N/mm²) – Passivated (Inconel) |
| Example Dimensions | – Hex Head Bushing: NPS 1/2″ to 4″ – Reducing Bushing: 2″ x 1″ (male x female) – Threaded Insert: 5-10mm (woodworking) |
Threaded Bushing Dimensions
| NPS | Min Length E | Min Hex Height C | Nominal F |
| 1/2 | 14 | 5 | 22 |
| 3/4 | 16 | 6 | 27 |
| 1 | 19 | 6 | 35 |
| 1.1/4 | 21 | 7 | 44.5 |
| 1.1/2 | 21 | 8 | 51 |
| 2 | 22 | 9 | 63.5 |
| 2.1/2 | 27 | 10 | 76 |
| 3 | 28 | 10 | 89 |
| 4 | 32 | 13 | 117.5 |
Common Uses:
Thread Adaptation – Allows different thread sizes or types (e.g., metric to imperial) to be joined.
Thread Repair – Restores stripped or damaged threads in components (e.g., Heli-Coil inserts).
Wear Protection – Used in high-wear environments to protect softer materials by replacing worn bushings rather than the entire part.
Vibration Damping or Isolation – Sometimes used with elastomeric components.
Types of Threaded Bushings:
Hex Bushings – External hex shape for wrench tightening.
Round Bushings – Typically with slots or knurled for grip.
Self-locking Bushings – With locking features to prevent loosening.
Threaded Inserts – For permanent thread reinforcement (e.g., Keenserts, Heli-Coils).
Materials:
Steel (zinc-plated, stainless)
Brass
Aluminum
Plastic or Nylon (for lightweight or corrosion-sensitive applications)
Applications
- Oil and Gas Pipelines
Chemical Processing
Plumbing
Hydraulic Systems
Power Plants
Petrochemical Industries
Woodworking
Consumer Electronics