Aceteel M5x0.8 Tap & 4.2mm Drill Bit Set (Ti-Coated M2 HSS)

What people love (and don’t love)

What people love

Great quality set with sharp edges and solid steel construction.
Works well for tapping threads and drilling in metal, including carbon steel and cast iron.
Good value for the price, surprising durability despite low cost.
Recommended for precision tasks like license plate mounting and thread punching.
Clear sharp edges, performs well with proper use of tapping oil and patience.

What people don’t love

Fragile and can break if used with too much force.
Quality appears cheap and not premium, some concerns about durability.
Does not fit all drills; compatibility issues reported.
Some users report poor quality or defects in certain sets.
Not suitable for heavy-duty tasks like towing hooks.

Good value tap and drill bit set for light to medium duty work, but handle with care and check drill compatibility.

Summary based on customer review evidence.

Check price on Amazon

Quick facts

Brand: Aceteel
Price: USD 6.99
Rating: 4.00 (8 reviews)

If you need to drill the correct pilot hole and cut M5 x 0.8 threads without piecing together separate bits and taps, this Aceteel 2-piece set keeps it straightforward. It includes a Ti-coated M5 x 0.8 tap and a matching 4.2mm drill bit—ideal for quick repairs, hobby work, and light shop tasks.

You can view the current price and full details on Amazon here.

Both tools are made from M2 high-speed steel and finished with a titanium coating to help improve wear resistance and extend service life. The set is intended for use across a wide range of metals including copper, alloy steel, cast iron, aluminum, brass, and iron plate.

Includes 1 pc M5 x 0.8 Ti-coated tap and 1 pc 4.2mm Ti-coated drill bit
M5 tap dimensions: 58mm length; 21mm thread head; 5.0mm shank diameter; 4.0mm x 4.0mm square head
4.2mm drill bit dimensions: 74mm length; 4.2mm cutting diameter
M2 high-speed steel construction with Ti-coated finish for improved wear resistance
Suitable for many metals including copper, alloy steel, cast iron, aluminum, brass, and iron plate

For best results, match your setup to the tool style: the drill bit features a straight handle design, and the tap uses a square head (4.0mm x 4.0mm) for use with an appropriate tap wrench.