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Hand tap M9x1 DIN 2181/2 6H HSS
Net price: €10.53
Description
Technical data for the M9x1 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M9 |
| Thread pitch P mm | 1 mm |
| Overall length l1 | 63 mm |
| Flute length l2 | 22 mm |
| Shank diameter d2 | 7 mm |
| Square drive size a | 5.5 mm |
| Tap drill diameter | 8 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 M9x1 thread is cut into the wall of a hole with a diameter of 8 mm. The thread groove extends 0.5 mm into the wall. A single tap would have to cut the entire groove at once, requiring substantial hand torque and risking 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 M9x1 hole – sequence 1, 2
Hand tapping step by step
Thread M9x1 in four steps
Drill bit 8 mm
Chamfer 8 threads
Chamfer 2 threads
Tolerance 6H
Turning sequence: half a turn clockwise, a quarter turn counterclockwise | Between taps: remove chips from the hole
Start with the hole. The drill diameter is easy to calculate: thread diameter 9 mm minus pitch 1 mm gives 8 mm. 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 22.5 mm, or 2.5 times the thread diameter (2.5 x 9 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 in the tap wrench and position it perpendicular to the surface. Check the angle from two sides, for example with a square. Turn half a turn clockwise, then a quarter turn counterclockwise. 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
Back out the roughing tap and remove chips from the hole. Screw the finishing tap into the cut threads by hand – it should engage them on its own. Continue turning at the same rhythm as with the roughing tap. The finishing tap removes the remaining material and cuts the groove to the full profile within tolerance 6H. When it screws in smoothly all the way, the thread is complete – check it with an M9x1 screw.
M9x1 hand taps
Hand Tap M9x1 DIN 2181/2 6H HSS is used to produce precision metric fine threads in structural steels, stainless steels, brass, and aluminum alloys. It produces a clean profile and stable geometry, which are particularly important in assembly processes and precision manufacturing.
Technical data: nominal diameter nine millimeters, pitch one millimeter, sixty° profile according to ISO 68-1, internal thread tolerance 6H according to ISO 965, right-hand direction. Straight flutes promote uniform chip evacuation, reducing the risk of seizure. The design according to DIN 2181/2 comprises a two-tap arrangement — starting (I) and finishing (II) — that distributes torsional loads and stabilizes axial alignment. Precision-ground high-speed steel (HSS) ensures cutting edge durability and resistance to microcracking. In workshop use, predictable results and smooth passes are supported by M9x1 Hand Tap Set, enabling a controlled sequence of tapping stages.
- Geometric precision — the two-tap design guarantees a stable thread profile and repeatable profile quality.
- Service life — high-speed steel (HSS) maintains edge sharpness even during longer machining cycles.
- Class 6H fit — dimensional accuracy is verified with GO/NO-GO gauges.
- Smooth operation — uniform torque distribution minimizes vibration and increases process stability.
Compliance with DIN 2181/2, ISO 68-1, and ISO 965 guarantees full compatibility with inspection instruments and maintains stable geometric parameters. In workshop and assembly applications, predictability and a high surface finish on the resulting threads are ensured by M9x1 Hand Tap Set, allowing accuracy to be maintained over long machining cycles.
Stages of cutting an M9x1 thread with a 2-piece set: roughing tap and finishing tap

Frequently asked questions
Yes, the set can be used in both through holes and blind holes, in accordance with DIN 2181 and class 6H.
The HSS tool works well in low-carbon steel, aluminum, brass, and other materials with good machinability.
High-speed steel (HSS) provides high durability, abrasion resistance, and stable operation even under demanding conditions.
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| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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