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Hand Tap M13x1 DIN 2181/2 6H HSS
Net price: €34.21
Description
Technical data for the M13x1 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M13 |
| Thread pitch P mm | 1 mm |
| Overall length l1 | 71 mm |
| Flute length l2 | 22 mm |
| Shank diameter d2 | 11 mm |
| Square drive size a | 9 mm |
| Tap drill diameter | 12 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 M13x1 thread is cut into the wall of a hole with a diameter of 12 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 M13x1 hole – sequence 1, 2
Hand tapping step by step
Thread M13x1 in four steps
Drill bit 12 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 13 mm minus pitch 1 mm gives 12 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 32.5 mm, or 2.5 times the thread diameter (2.5 x 13 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 M13x1 screw.
M13x1 fine-thread hand taps
Hand Tap M13x1 DIN 2181/2 6H HSS is designed for manually cutting metric fine threads in structural steels and metal alloys, and as a precision M13x1 metric tap, it ensures a stable thread profile and uniform dimensions along the entire length.
Key parameters: pitch 1; nominal diameter 13 mm; profile angle 60°; tolerance 6H; HSS construction; 2-piece set (roughing tap + finishing tap). Recommended predrilling diameter Ø12 mm. Suitable for through holes and blind holes; guidance with a tap wrench is recommended to maintain axial alignment and controlled torque.
- Sequence of 2 pcs — progressive profile formation reduces the risk of burrs and improves thread flank smoothness.
- Axial alignment control — using a tap wrench improves perpendicularity, stabilizing the working clearance in the 6H/6g mating pair.
- HSS high-speed steel — good abrasion resistance during reversing cycles for chip breaking; Hand Tap Set M13X1 maintains sharpness in typical workshop applications.
- Repeatable dimensions — proper lubrication and a drill diameter of 12.0 mm promote uniform thread height.
Compliance and standards: DIN 2181/2 (hand tap set), triangular profile according to ISO 68-1, tolerances according to ISO 965 (class 6H for a hole mating with 6g). M13x1 hand tap set ensures a predictable assembly fit and a clean profile, facilitating installation in precision threaded holes requiring fine-pitch hand taps.
Stages of cutting an M13x1 thread with a 2-piece set: roughing tap and finishing tap

Frequently asked questions
The set includes two taps – a roughing tap for initial cutting and a finishing tap for final thread formation.
Yes, M13x1 hand taps are suitable for both through holes and blind holes.
M13x1 HSS taps perform well when machining low-carbon steel, aluminum, brass, and other free-machining metals.
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