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Machine Tap M26x1.5 DIN 374/40 HSSE
€61.50 tax inc.
Net price: €50.00
Description
Material HSSE
Thread size M26x1.5
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M26x1.5 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M26x1.5 |
| Thread Pitch P | 1.5 mm |
| Helix Angle | 40° |
| Overall Length l1 | 140 mm |
| Flute Length l2 | 27 mm |
| Shank Diameter d2 | 18 mm |
| Square Drive Size a | 14.5 mm |
| Tap Drill Diameter | 24.5 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
How a spiral flute tap evacuates chips from a blind hole
The 40° flute works like a screw conveyor
The flutes of this tap follow a right-hand helix at an angle of 40° 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 clear, and the cutting edges do not encounter packed chips. The M26x1.5 tap has a reduced shank to DIN 374: diameter 18 mm, square drive 14.5 mm.
1
The 40° 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 1.5 mm/rev, equal to the pitch of the M26x1.5 thread.
M26x1.5 machine tap for blind holes – HSSE DIN 374
The M26x1.5 machine tap is a professional tool for cutting internal threads in blind holes. Made from HSSE high-speed steel with 5% added cobalt and a hardness of 65-67 HRC, it provides optimal cutting edge life and stable operation at temperatures up to 650°C. The 6H tolerance complies with DIN 374.
Key advantages of the M26x1.5 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 374 – verified dimensional quality
- 40° spiral flutes – efficient rearward chip evacuation
The M26x1.5 machine tap is used in toolrooms and maintenance departments. The recommended tap drill diameter is 25 mm.
Cutting data for the M26x1.5 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 61-244 | 91-366 |
| MStainless steel | 5-10 | 61-122 | 91-183 |
| KCast iron | 5-15 | 61-183 | 91-274 |
| NAluminum | 10-25 | 122-306 | 183-459 |
Thread preparation M26x1.5 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 25 mm
3 Tapping
M26x1.5
✓ Done!
Tolerance 6H
Standard: DIN 374 | 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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| 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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