Product Description
Milwaukee 1/4 in.-28 NF 1 in. Hex Threading Die
Model Number: 49-57-5338
The Milwaukee 49-57-5338 is a 1/4 in.-28 NF 1 in. Hex Threading Die, precision machined for creating or repairing clean, accurate external threads. Where a tap cuts internal threads inside a drilled hole, a die does the opposite job: it cuts external threads onto round stock and rod, or chases and restores the damaged threads on an existing bolt or stud. This die cuts the 1/4 in.-28 NF thread, a 1/4 in. diameter with 28 threads per inch in the National Fine series. Note the thread series carefully: the 1/4 in. size comes in two common threads, this fine 1/4 in.-28 and the coarser 1/4 in.-20, so match this die to 1/4 in.-28 hardware and confirm your thread before ordering, since the two are not interchangeable. The finer 28 TPI thread is common in automotive, aerospace, hydraulic and pneumatic fittings, and precision assembly, so a 1/4 in.-28 die is the tool for threading rod and studs or restoring a damaged 1/4 in.-28 external thread in that work. The defining feature of this die is its 1 in. hex shape: instead of a round die that requires a dedicated round die stock, this hex die is driven with a standard 1 in. wrench, socket, or die stock, so you can run it with tools you already carry and apply solid, controlled torque to the cut.
The die is built for durability and lasting identification. High carbon steel construction holds a sharp cutting edge through the common metal applications it is designed for, and a protective black oxide coating resists corrosion while helping to reduce friction as the die cuts. Milwaukee marks these dies with long-lasting laser-etched sizing rather than stamped markings, so the size and thread series stay clearly legible over the life of the tool, which matters when you carry both the 1/4 in.-20 and 1/4 in.-28 dies. The 1 in. hex body seats securely in a wrench or socket for straight, square starts and steady cutting.
This threading die is designed for cutting external 1/4 in.-28 NF threads in the most common metal applications, including brass, aluminum, mild steel, and more, which makes it a go-to for mechanics, machinists, fabricators, and maintenance crews who work with 1/4 in.-28 hardware. It pairs directly with the matching 1/4 in.-28 NF tap for complete internal and external threading of the same size, drops into the Milwaukee Hex-LOK 2-in-1 Threading Handle for controlled cutting, and is compatible with all standard 1 in. hex die stocks. For the cleanest finish, easiest cutting, and longest die life, use the die with cutting fluid to keep heat and friction down as it works.
Features
- Genuine Milwaukee 1/4 in.-28 NF 1 in. Hex Threading Die
- Cuts clean, accurate external threads on rod, stock, bolts, and studs
- Chases and repairs damaged 1/4 in.-28 NF external threads
- 1 in. hex shape driven by a standard wrench, socket, or die stock
- No dedicated round die stock required
- Fine 1/4 in.-28 thread, distinct from the coarse 1/4 in.-20, so confirm your thread
- Common in automotive, aerospace, hydraulic fittings, and precision assembly
- High carbon steel construction for durability
- Protective black oxide coating for corrosion resistance
- Long-lasting laser-etched sizing for the clearest identification
- Pairs with the matching 1/4 in.-28 NF tap and fits the Hex-LOK 2-in-1 Handle
- Best used with cutting fluid for a clean finish and longer die life
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 49-57-5338
- Type: Hex Threading Die
- Thread Size: 1/4 in.
- Thread Series: NF (National Fine)
- Threads Per Inch: 28
- Function: Cuts external threads
- Die Shape: 1 in. hex, wrench or socket driven
- Material: High carbon steel
- Finish: Black oxide
- Threads: Brass, aluminum, mild steel, and other common metals
- Part Type: Genuine Milwaukee Accessory
Includes
- (1) Milwaukee 49-57-5338 1/4 in.-28 NF 1 in. Hex Threading Die
