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Description
Material HSSE
Thread size M2.6
ChamferC (2–3) threads
Standard DIN 371
Technical data for the M2.6 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M2.6 |
| Thread Pitch P | 0.45 mm |
| Helix Angle | 35° |
| Overall Length l1 | 50 mm |
| Flute Length l2 | 9 mm |
| Shank Diameter d2 | 2.8 mm |
| Tap Drill Diameter | 2.1 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
| Length l3 | 14 mm |
| Square drive size a | 2.1 mm |
How a spiral flute tap evacuates chips from a blind hole
The 35° flute works like a screw conveyor
The flutes of this tap spiral to the right at an angle of 35° to the axis. The tap rotates clockwise and advances into the hole. Chips cut by the chamfer enter the flute, and the helix carries them upward like the auger in a meat grinder. The bottom of the hole stays clean, and the cutting edges do not encounter packed chips. The M2.6 x0.45 tap has a reinforced shank to DIN 371: diameter 2.8 mm, square 2.1 mm.
1
The 35° spiral flute carries chips upward from the chamfer.
2
The stepped chip exits the hole and breaks into short pieces.
3
The tap rotates clockwise to cut a right-hand thread.
4
Chamfer C: 2–3 incomplete threads on the tapered lead.
5
Clearance below the tap tip – min. 2 thread pitches above the bottom.
6
Feed 0.45 mm/rev, equal to the pitch of the M2.6 x0.45 thread.
M2.6 machine tap for blind holes – HSSE DIN 371
The M2.6 machine tap is a professional tool for cutting internal threads in blind holes. Made of HSSE high-speed steel with 5% cobalt and a hardness of 65-67 HRC, it provides optimum cutting edge life and stable operation at temperatures up to 650°C. Tolerance 6H in accordance with DIN 371.
Main advantages of the M2.6 machine tap
- HSSE material – hardness of 65-67 HRC and heat resistance up to 650°C
- Chamfer C (2÷3 threads) – optimal for blind holes
- Tolerance 6H – standard accuracy grade for bolted joints
- Compliance with DIN 371 – verified dimensional quality
- 35° spiral flutes – efficient rearward chip evacuation
The M2.6 machine tap is used in toolrooms and maintenance departments. The recommended tap drill diameter is 2.1 mm.
Cutting data for the M2.6 blind-hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 612-2448 | 275-1101 |
| MStainless steel | 5-10 | 612-1224 | 275-550 |
| KCast iron | 5-15 | 612-1836 | 275-826 |
| NAluminum | 10-25 | 1224-3060 | 550-1377 |
Thread preparation M2.6 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 2.1 mm
3 Tapping
M2.6
✓ Done!
Tolerance 6H
Standard: DIN 371 | Chamfer: C (spiral flute) | Application: blind 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)
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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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