Tr25 X 5 Metric Left-Hand Trapezoidal Tap – HSS Threading Tool For Manual & CNC Use, 230mm Length, High-Speed Steel

About This Product

If you're working with metric trapezoidal threads and need a left-hand tap, this Tr25 x 5 is a solid choice.

It's made from high-speed steel, so it's tough, holds an edge well, and handles the wear and tear of threading jobs without complaining.
The dimensions are pretty generous—230mm total length with a 160mm threaded section—so you've got good reach for deeper holes.

It's a left-hand cutting direction tap, which is a bit more niche, but if you need it, you know exactly why it's important.

You can run this on manual equipment like tapping machines or bench drills, or throw it in a CNC lathe or machining center—it's versatile like that.
One key tip: adjust your speed based on material hardness—go slower on harder stuff.

For general steel, aim for 6-15 m/min; for harder steels, 5-10 m/min; and for cast iron, 8-10 m/min.
Always make sure your pilot hole diameter is right, and don't forget to use coolant or cutting oil to keep things cool and extend the tap's life.
If it starts to bind up, stop and back it out.

And after you're done, give it a coat of rust-preventive oil to keep it in good shape for next time.

SIZE – Total length 9.
1" / 230mm, thread head 6.

3" / 160mm.
FEATURE – High-speed steel with high hardness and toughness, efficient chip removal.
APPLICATION – For most metals, copper, alloy steel, cast iron, aluminum, brass, abrasive steel, A3 steel, iron plate, etc.

USAGE – Works with manual gear or CNC machines; use coolant for longer life.
PACKAGE – 1pc Tr25 x 5mm left-hand trapezoidal tap.