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M4 DIN 371 C 6HX SR HSSE-PM WGN TN
€24.60 tax inc.
Net price: €20.00
Description
Material HSSE-PM
Thread size M4
ChamferC (2–3) threads
Standard DIN 371
Technical data for the M4 forming tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M4 |
| Thread Pitch P | 0.7 mm |
| Overall Length l1 | 63 mm |
| Flute Length l2 | 7 mm |
| Length l3 | 21 mm |
| Shank Diameter d2 | 4.5 mm |
| Square Drive Size a | 3.4 mm |
| Tap Drill Diameter | 3.3 mm |
| Chamfer | C (2÷3) |
| Thread tolerance | 6H |
M4 forming tap for blind holes – HSSE-PM DIN 371
The M4 forming tap is a professional tool for chipless forming of internal threads. Made from HSSE-PM powder metallurgy steel with a hardness of 67-69 HRC, it provides maximum durability and precision. Thread forming technology increases joint strength through work hardening of the material. Tolerance 6HX conforming to DIN 371.
Key benefits of the M4 forming tap
- HSSE-PM material – hardness of 67-69 HRC and heat resistance up to 700°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
The M4 forming tap is used in toolrooms and maintenance departments. The recommended predrilled hole diameter is 3.3 mm.
Cutting data for the M4 forming tap for blind holes
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 397-1591 | 277-1113 |
| MStainless steel | 5-10 | 397-795 | 277-556 |
| KCast iron | 5-15 | 397-1193 | 277-835 |
| NAluminum | 10-25 | 795-1989 | 556-1392 |
Thread preparation M4 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 3.3 mm
3 Tapping
M4
✓ Done!
Tolerance 6H
Standard: DIN 371 | Chamfer: C (straight) | 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)
Product accessories
M10 DIN 371 C 6HX SR HSSE-PM WGN TN
Reference: 0000010839 In stock < 10 items
€35.79
€44.02 brutto
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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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