Product Description
Milwaukee M4-0.75 mm Straight Flute Plug Tap
Model Number: 49-57-5120
The Milwaukee 49-57-5120 is an M4-0.75 mm Straight Flute Plug Tap, precision machined for creating or repairing clean, accurate internal threads. A tap cuts female threads into a drilled hole, and this plug tap is the most common general-purpose style, with a short tapered chamfer of a few threads at the tip that starts the tap square in the hole before transitioning to full-form threads, which makes it well suited to through-hole threading. The M4-0.75 mm designation identifies a 4 mm nominal diameter with a 0.75 mm thread pitch. Take note of the pitch: Milwaukee offers the M4 tap in two pitches, this 0.75 mm version and a 0.70 mm version, so match this tap to M4 hardware with a 0.75 mm pitch and confirm your thread pitch before ordering, since the two are not interchangeable. The straight flute geometry gives the tap the versatility to handle general threading work across common metals.
The tap 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 tap cuts. Milwaukee marks these taps with long-lasting laser-etched sizing rather than stamped markings, so the size and pitch stay clearly legible over the life of the tool, which matters when you carry both M4 pitches. The square shank is compatible with all standard tap handles and tap wrenches, so it drops right into the threading tools you already run.
This plug tap is designed for cutting threads in the most common metal applications, including brass, aluminum, mild steel, and more, which makes it a go-to for machinists, fabricators, technicians, and maintenance crews working with M4-0.75 mm hardware. It handles both tapping fresh holes and chasing or repairing an existing damaged M4-0.75 thread. For the cleanest finish, easiest cutting, and longest tap life, use the tap with cutting fluid to keep heat and friction down as it works.
Features
- Genuine Milwaukee M4-0.75 mm Straight Flute Plug Tap
- Cuts clean, accurate internal threads in the M4-0.75 mm metric thread
- Plug tap style with a starting chamfer for square, easy starts
- Designed for through-hole threading
- 0.75 mm pitch version of the M4 tap, distinct from the M4-0.70 mm
- High carbon steel construction for durability
- Protective black oxide coating for corrosion resistance
- Long-lasting laser-etched sizing for the clearest identification
- Square shank fits all standard tap handles and tap wrenches
- Straight flute design for versatile general-purpose threading
- Threads brass, aluminum, mild steel, and other common metals
- Best used with cutting fluid for a clean finish and longer tap life
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 49-57-5120
- Type: Straight Flute Plug Tap
- Thread Size: M4
- Thread Pitch: 0.75 mm
- Measurement System: Metric
- Tap Style: Plug, for through-hole threading
- Flutes: Straight
- Material: High carbon steel
- Finish: Black oxide
- Shank: Square, fits standard tap handles and wrenches
- Materials Threaded: Brass, aluminum, mild steel, and other common metals
- Part Type: Genuine Milwaukee Accessory
Includes
- (1) Milwaukee 49-57-5120 M4-0.75 mm Straight Flute Plug Tap
