Product Description
Milwaukee 1/8-28 BSP 1 in. Hex Threading Die
Model Number: 49-57-5390
The Milwaukee 49-57-5390 is a 1/8-28 BSP 1 in. Hex Threading Die, precision machined for creating or repairing clean, accurate external pipe threads. BSP (British Standard Pipe) is the pipe-thread standard used across the United Kingdom, Europe, Asia, and Australia, so this die is for threading pipe and fittings built to the British standard rather than the American system. It cuts a 1/8-28 BSP thread, with 28 threads per inch, as a right-hand thread. BSP threads use the British Standard Whitworth 55-degree thread form, which differs from the 60-degree form used by American inch threads, and that difference in thread angle is part of why BSP and American pipe threads cannot be mixed. It is made from high carbon steel for durability and finished with a black oxide coating for corrosion resistance, with laser-etched sizing for long-lasting, clear markings and a clearly labeled starting side to help start the thread straight.
Note that pipe-thread sizes refer to nominal pipe size, not to the physical diameter of the thread. The 1/8 in this 1/8-28 BSP designation is the nominal pipe size, and the actual thread diameter is larger than 1/8 in., so this die is intended for threading pipe and pipe-sized stock, not for cutting a 1/8 in. fastener thread. This is a 1 in. hex die, so it has a 1 in. hex outer shape that locks positively into a hex die stock. The 1 in. hex design is compatible with the Milwaukee Hex-LOK 2-in-1 Threading Handle as well as all standard 1 in. hex die stocks. It is designed for cutting threads in the most common metal materials, including brass, aluminum, mild steel, and more, and Milwaukee recommends using it with cutting fluid when cutting the thread. When assembling the finished connection, a thread sealant such as pipe joint compound or PTFE tape is typically used to complete the seal.
When ordering, confirm the thread standard, not just the size, because pipe threads come in look-alike standards that are not interchangeable. This is a 1/8-28 BSP die, the British Standard Pipe thread; it is not the same as the 1/8-27 NPT die (49-57-5389), which cuts the American National Pipe Taper thread, and the two differ in both threads per inch and thread form. Using the wrong standard will not seal and can damage the mating threads, so match the standard your pipe or fitting actually uses. This die is sold individually as a single piece and is a hand threading tool, not a power tool accessory, so it is intended for use in a hand-operated die stock or threading handle. The Hex-LOK 2-in-1 Threading Handle, cutting fluid, and thread sealant are sold separately. For users who need a range of sizes, this same die is also offered as part of Milwaukee's tap and die sets.
Features
- 1/8-28 BSP 1 in. hex threading die for cutting external pipe threads
- 28 threads per inch, BSP (British Standard Pipe) standard
- British Standard Whitworth 55-degree thread form
- For threading pipe and fittings built to the British standard
- Pipe-thread size is nominal pipe size, not the actual thread diameter
- Cuts a right-hand thread
- Precision machined for creating or repairing clean, accurate threads
- High carbon steel construction for durability
- Black oxide coating for corrosion resistance
- Laser-etched sizing for long-lasting, clear markings
- Clearly labeled starting side for easier thread starting and setup
- 1 in. hex design compatible with the Hex-LOK 2-in-1 Threading Handle and standard 1 in. hex die stocks
- Use with cutting fluid when cutting; use thread sealant at assembly to seal the joint
- Not interchangeable with the 1/8-27 NPT pipe die, confirm the thread standard
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 49-57-5390
- Official Description: 1/8-28 BSP 1 in. Hex Threading Die
- Component Type: Hex pipe threading die (external British Standard Pipe thread)
- Thread Size: 1/8-28
- Threads Per Inch: 28
- Thread Standard: BSP (British Standard Pipe), right-hand
- Thread Form: British Standard Whitworth, 55-degree
- Nominal Pipe Size: 1/8 in.
- Hex Size: 1 in.
- Die Design: Solid
- Material: High carbon steel
- Finish: Black oxide coating
- Compatibility: Milwaukee Hex-LOK 2-in-1 Threading Handle and all standard 1 in. hex die stocks
- Quantity: Sold individually (1 piece)
Includes
- (1) Milwaukee 49-57-5390 1/8-28 BSP 1 in. Hex Threading Die
The Hex-LOK 2-in-1 Threading Handle, hex die stock, cutting fluid, and thread sealant are NOT included and are sold separately. This die cuts the 1/8-28 BSP British pipe thread and is NOT the same as the 1/8-27 NPT die (49-57-5389); confirm whether your application uses BSP or NPT before ordering.
