Product Description
Milwaukee M12-1.75 mm Straight Flute Plug Tap
Model Number: 49-57-5158
The Milwaukee 49-57-5158 is an M12-1.75 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 it transitions to full-form threads, which makes it well suited to through-hole threading. The M12-1.75 mm designation identifies a 12 mm nominal diameter with a 1.75 mm thread pitch, which is the standard coarse pitch for an M12 thread and one of the most widely used larger metric threads in the trades. Note the pitch carefully: Milwaukee offers the M12 tap in three pitches, this 1.75 mm coarse version, a 1.50 mm, and a 1.25 mm, so match this tap to M12-1.75 mm hardware specifically and confirm your thread pitch before ordering, since the three are not interchangeable. M12 hardware is common in automotive, machinery, structural connections, and heavy metric assembly, and the straight flute geometry gives the tap the versatility to handle general threading 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 especially when you carry all three M12 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, mechanics, and maintenance crews working with M12-1.75 mm hardware. It handles both tapping fresh holes and chasing or repairing an existing damaged M12-1.75 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 M12-1.75 mm Straight Flute Plug Tap
- Cuts clean, accurate internal threads in the common M12-1.75 mm metric thread
- Plug tap style with a starting chamfer for square, easy starts
- Designed for through-hole threading
- 1.75 mm coarse pitch, distinct from the M12-1.50 mm and M12-1.25 mm
- M12-1.75 mm is the standard coarse M12 thread, widely used in metric assembly
- 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
- 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: 49-57-5158
- Type: Straight Flute Plug Tap
- Thread Size: M12
- Thread Pitch: 1.75 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 49-57-5158 M12-1.75 mm Straight Flute Plug Tap
