Product Description
Milwaukee 4-36 NS Straight Flute Plug Tap
Model Number: 49-57-5107
The Milwaukee 49-57-5107 is a 4-36 NS 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 is a plug tap, the most common general-purpose style, featuring a short tapered chamfer of a few threads at the tip that helps the tap start square in the hole before transitioning to full-form threads, which makes it well suited to through-hole threading. The straight flute geometry is a versatile, dependable choice for general threading work in a range of common metals. The 4-36 NS designation identifies the thread this tap cuts: a number 4 machine screw diameter with 36 threads per inch in the National Special series. Because NS is a special thread pitch rather than a standard coarse or fine pitch, this tap fills the need for the specific 4-36 thread that standard NC and NF taps cannot produce, which is exactly why keeping the correct specialty tap on hand matters when that thread comes up.
The tap is engineered for durability and clear, lasting identification. It is made from high carbon steel to hold a cutting edge through the common metal applications it is designed for, and it carries a protective black oxide coating that resists corrosion and helps reduce friction during cutting. Milwaukee finishes these taps with long-lasting laser-etched sizing rather than stamped markings, so the size stays legible over the life of the tool instead of wearing away. The square shank is compatible with all standard tap handles and tap wrenches, and the tap measures 2 in. in overall length with a four-flute design that clears chips as it cuts.
This plug tap is designed for cutting threads in the most common metal applications, including brass, aluminum, mild steel, and more, making it a practical choice for machinists, fabricators, maintenance technicians, and anyone who needs to create or restore a 4-36 NS thread. It works equally well for tapping a fresh hole or chasing and repairing an existing damaged thread. For the best results, cleanest finish, and longest tap life, use the tap with cutting fluid, which reduces heat and friction as the tap cuts.
Features
- Genuine Milwaukee 4-36 NS Straight Flute Plug Tap
- Cuts clean, accurate internal threads in the 4-36 NS thread size
- Plug tap style with a starting chamfer for square, easy starts
- Designed for through-hole threading
- Precision machined for creating or repairing threads
- 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
- Four-flute design with a 2 in. overall length
- 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: 49-57-5107
- Type: Straight Flute Plug Tap
- Thread Size: 4-36
- Thread Series: NS (National Special)
- Threads Per Inch: 36
- Tap Style: Plug, for through-hole threading
- Flutes: Four, straight
- Material: High carbon steel
- Finish: Black oxide
- Overall Length: 2 in.
- 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 49-57-5107 4-36 NS Straight Flute Plug Tap
