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Hand Tap M10X0.75 LH DIN 2181/2 HSS Fra
0000009691
Thread size: M10x0,7542 sizes of this tap
€13.27 tax inc.
Net price: €10.79
Description
Technical data for the M10x0.75 left-hand hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M10 |
| Thread pitch P mm | 0.75 mm |
| Overall length l1 | 63 mm |
| Flute length l2 | 18 mm |
| Shank diameter d2 | 7 mm |
| Square drive size a | 5.5 mm |
| Tap drill diameter | 9.2 mm |
| Thread angle G | 60° |
| Tap tolerance | ISO2 6H |
Roughing tap and finishing tap – how much material each removes
Division of work in the 1–2 set
The M10x0.75 LH thread is cut into the wall of a hole with a diameter of 9.2 mm. The thread groove extends 0.4 mm into the wall. A single tap would have to cut the entire groove at once — by hand, this means high resistance and a risk of breakage. The set divides this work into two passes.
The drawing shows the entire set in operation. Both taps have the same shank and the same length. They differ in their chamfer, the tapered tip: No. 1 has a chamfer spanning 8 threads, while No. 2 spans only 2 threads. The detail windows at the hole wall show how the thread groove deepens after each tap.
| Tap | Chamfer | Chamfer angle | Material removed | How it works in the hole |
|---|---|---|---|---|
| No. 1 – roughing tap | long, 8 threads | 5° | the main portion of the groove | enters smoothly and establishes thread alignment |
| No. 2 – finishing tap | short, 2 threads | 20° | the remainder, to the full profile | follows the cut threads and produces the full 6H profile |
How to distinguish the taps in the set
The chamfer on No. 1 is 4 times as long as the chamfer on No. 2 — the difference is immediately visible when you place them side by side. No. 1 has an incomplete thread profile; only No. 2 has the full profile. The number is also indicated on the shank: No. 1 has one ring, No. 2 has none. Keep the set together and always start with the roughing tap.
How to tap an M10x0.75 LH hole – sequence 1, 2
Hand tapping step by step
Thread M10x0.75 LH in four steps
ØDrilling
Drill bit 9.2 mm
1Roughing tap
Chamfer 8 threads
2Finishing tap
Chamfer 2 threads
✓Finished thread
Tolerance 6H
Turning sequence: half a turn counterclockwise, a quarter turn clockwise | Between taps: remove chips from the hole
Start with the hole. The drill diameter is easy to calculate: thread diameter 10 mm minus pitch 0.75 mm gives 9.25 mm — in practice, use a 9.2 mm drill bit. An undersized hole is a common cause of a tap twisting off in the workpiece.
Through hole or blind hole – how deep to drill
The set taps both types of holes. In a through hole, the thread extends through the full material thickness. In a blind hole, cut the thread to 25 mm, or 2.5 times the thread diameter (2.5 x 10 mm, shown as 2.5D in the drawing). Drill the hole deeper than the thread. The finishing tap has a chamfer spanning 2 threads, so approx. 2 incomplete threads remain near the bottom. The extra depth below the thread accommodates them along with the chips.
No. 1 – the roughing tap establishes thread alignment
Fit the roughing tap into a tap wrench and position it perpendicular to the surface. Check the angle from two sides, for example with a square. This is a left-hand thread, so turn in the opposite direction to usual: half a turn counterclockwise, then a quarter turn clockwise. Reversing breaks the chip into short pieces — a slight crunch is normal. The first threads determine whether the thread will be straight.
No. 2 – the finishing tap produces the full profile
Unscrew the roughing tap and remove chips from the hole. Screw the finishing tap by hand into the cut threads — it should engage them naturally. Continue with the same turning sequence as for the roughing tap. The finishing tap removes the remaining material and cuts the groove to its full profile within 6H tolerance. Once it screws smoothly all the way in, the thread is complete — check it with an M10x0.75 LH screw.
M10x0.75 left-hand metric fine hand taps
M10x0.75 left-hand hand tap DIN 2181 6H HSS is a tool designed for cutting left-hand metric fine threads with a pitch of 0.75 mm. The set consists of two parts – a roughing tap and a finishing tap – which ensure precise thread cutting when used in sequence.
The manufacturer is Fra, known for the durability, stable performance, and careful workmanship of its tools. High-speed steel (HSS) makes the taps durable, wear-resistant, and suitable for machining a wide range of materials, such as steel, aluminum, and brass.
The set meets DIN 2181 requirements and conforms to thread tolerance class 6H. It can be used in both through and blind holes. Tapping is performed using a tap wrench secured to the square drive, ensuring a controlled and safe process.
Key features:
- Left-hand thread – designed for cutting left-hand threads.
- Two-piece set – includes a roughing tap and a finishing tap for the complete tapping process.
- Manufacturer Fra– durability, stable performance, and careful workmanship.
- HSS steel – high durability and resistance to heavy use.
- Versatile applications – suitable for use in through and blind holes.
Stages of cutting an M10x0.75 left-hand thread with a 2-piece set: roughing tap and finishing tap
Frequently asked questions
LH indicates a left-hand thread, a connection in which the tool rotates in the opposite direction to a standard right-hand thread.
The set consists of two taps – a roughing tap for initial cutting and a finishing tap for producing the final thread form.
Yes, the set is designed for both through and blind holes, in accordance with DIN 2181 and tolerance class 6H.
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| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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