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Description
Material HSS
Thread size M2
ChamferB (3.5–5.5) threads
Standard DIN 371
Technical data for the M2 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M2 |
| Thread Pitch P | 0.4 mm |
| Overall Length l1 | 45 mm |
| Flute Length l2 | 10 mm |
| Length l3 | 13 mm |
| Shank Diameter d2 | 2.8 mm |
| Square Drive Size a | 2.1 mm |
| Tap Drill Diameter | 1.6 mm |
| Chamfer | B (3.5÷5.5) P |
| Thread tolerance | 6H |
How the type B through-hole chamfer pushes chips down the hole
Chips exit at the bottom instead of returning through the thread
The form B through-hole chamfer has a chip breaker at the front of the tap – an angled cut in the cutting edges. The chip breaker directs chips down the hole, ahead of the tap tip. The chip curls into a coil, breaks into short pieces, and exits the hole on the other side of the workpiece. Threads already cut remain clean because chips do not pass through them on their way up. The M2 x0.4 tap has a reinforced shank in accordance with DIN 371: diameter 2.8 mm, square 2.1 mm.
1
Straight flute – chips do not enter it; the flute carries lubricant to the cutting edges.
2
The chip breaker at the tip of the tap directs chips down the hole.
3
The tap rotates clockwise to cut a right-hand thread.
4
B chamfer: 3.5–5.5 incomplete threads on the entry taper.
5
The chips break into segments: individual pieces at the top of the hole, with progressively more farther down. They fall out below the workpiece.
6
Feed 0.4 mm/rev, equal to the pitch of the M2 x0.4 thread.
M2 through-hole machine tap – economical Werko HSS DIN 371
The M2 through-hole machine tap from manufacturer Werko is an economical tool for cutting internal threads with the smallest standard metric diameter of 2 mm in structural steels and nonferrous materials. HSS high-speed steel with a hardness of 63-65 HRC provides good tool life in standard applications in small component production and precision engineering. M2 is the smallest standard metric thread size, requiring particular care during tapping due to its small diameter and susceptibility to breakage. As a manufacturer of economical tools, Werko offers good value for money for standard applications.
Key features of the Werko M2 HSS machine tap
- Manufacturer Werko offers economical tools with good value for money, intended for standard applications in small component production and mechanical engineering
- Smallest metric thread M2 with a diameter of 2 mm requires particular care when tapping due to the low core strength and susceptibility to breakage under excessive torque
- HSS steel with a hardness of 63-65 HRC provides good tool life in standard applications in structural steels up to 800 MPa, aluminum, and brass
- The 6H tolerance in accordance with DIN 371 ensures thread accuracy and full interchangeability with fasteners used in electronics and precision engineering
- Short shank according to DIN 371, compatible with ER11 collet chucks and small collets for precise clamping on CNC machining centers
- Metric pitch of 0.4 mm in accordance with DIN 13 for M2 coarse threads, with a recommended tap drill diameter of 1.6 mm requiring precise drilling
The Werko M2 machine tap is used in electronic component production, watchmaking, model making, and precision engineering of small components. Tapping M2 requires low cutting speeds of Vc 4-8 m/min and copious coolant. Cooling with tapping oil or an emulsion at a minimum concentration of 10% is recommended to protect against tool breakage.
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 796-3183 | 318-1273 |
| MStainless steel | 5-10 | 796-1592 | 318-637 |
| KCast iron | 5-15 | 796-2387 | 318-955 |
| NAluminum | 10-25 | 1592-3979 | 637-1592 |
Thread preparation M2 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 1.6 mm
3 Tapping
M2
✓ Done!
Tolerance 6H
Standard: DIN 371 | Chamfer: B (straight) | Application: through holes
Tolerance 6H — metric thread tolerance classes
| Class | Accuracy | Application | Status |
|---|---|---|---|
| 4H / 4g | High | Precision connections, hydraulics | — |
| 6H / 6g | Standard | Machine building, general-purpose | SELECTED |
| 7H / 8g | Low | Large clearance, easy assembly | — |
6H = internal thread (nut, hole) | 6g = external thread (screw)
Frequently asked questions
Werko is a manufacturer of economical tools offering good value for money. Werko taps are intended for standard applications and small-batch production.
The recommended tap drill diameter for the M2 thread is 1.6 mm. Precise drilling is critical due to the small thread diameter.
An HSS tap has a hardness of 63-65 HRC and is suitable for steels up to 800 MPa. HSSE with 5% cobalt has a hardness of 65-67 HRC and better heat resistance for difficult-to-machine materials.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| 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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