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Description
Material HSSE
Thread size M10
ChamferC (2–3) threads
Standard DIN 371
Technical data for the M10 blind-hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M10 |
| Thread Pitch P | 1.5 mm |
| Helix Angle | 35° |
| Overall Length l1 | 100 mm |
| Flute Length l2 | 15 mm |
| Length l3 | 39 mm |
| Shank Diameter d2 | 10 mm |
| Square Drive Size a | 8 mm |
| Tap Drill Diameter | 8.5 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
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 M10 x1.5 tap has a reinforced shank to DIN 371: diameter 10 mm, square 8 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 1.5 mm/rev, equal to the pitch of the M10 x1.5 thread.
M10 spiral-flute machine tap – for blind holes
The M10 spiral flute machine tap is a professional tool for cutting internal threads in blind holes up to 2.5D deep. The 35° spiral flute design provides effective backward chip evacuation, eliminating the risk of jamming during blind hole tapping. HSSE steel with 5% cobalt ensures a hardness of 65-67 HRC and thermal stability up to 650°C. The 6H tolerance to DIN 371 ensures the dimensional repeatability required in series production. The tool is intended for CNC operators, toolrooms, and maintenance departments.
Key advantages of the M10 spiral flute machine tap
- 35° spiral flute geometry directs chips backward during cutting, which is essential when tapping blind holes without the risk of damaging the hole bottom
- Durability enhanced by the addition of 5% cobalt allows operation at temperatures up to 650°C in the cutting zone without loss of the tool's mechanical properties
- Tolerance class 6H precision in accordance with DIN 371 guarantees full thread interchangeability and dimensional repeatability in series production
- Material versatility covering structural steels up to 900 MPa, austenitic stainless steels 304/316, aluminum, and copper and brass alloys
- Chamfer form C allows tapping close to the bottom of a blind hole with a minimal incomplete thread length of just 2-3 pitches
- Compatibility with ER16 and ER25 tool holders and tapping chucks with axial compensation for CNC machining centers and automatic lathes
The M10 spiral flute tap is suitable for automotive series production and assembly lines requiring high repeatability. The tap drill diameter for the M10 thread is 8.5 mm in accordance with DIN 336. The tool works with standard mineral oil-based tapping lubricants and coolant emulsions.
Cutting data for the M10 blind-hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 159-637 | 238-956 |
| MStainless steel | 5-10 | 159-318 | 238-477 |
| KCast iron | 5-15 | 159-477 | 238-716 |
| NAluminum | 10-25 | 318-796 | 477-1194 |
Thread preparation M10 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 8.5 mm
3 Tapping
M10
✓ 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)
Frequently asked questions
The M10 HSSE spiral flute machine tap is suitable for structural steels up to 900 MPa, 304/316 austenitic stainless steels, aluminum, brass, and gray cast iron. HSSE steel with 5% cobalt also allows machining of alloy and ferritic steels with adequate cooling.
For an M10x1.5 thread in tolerance class 6H, the recommended tap drill diameter is 8.5 mm. The hole tolerance zone should fall within the range of 8.5 to 8.7 mm, corresponding to H12 tolerance. Exceeding the upper limit results in an incomplete thread profile and a lower thread class.
Yes, cooling with an oil emulsion of at least 8% or with tapping oil is recommended and extends tool life by a factor of 2-3. Intensive cooling is required when machining stainless steels, while aluminum can be tapped with minimum quantity lubrication (MQL).
Product accessories
Hand tap M10 DIN 352/3 6H HSS Bucovice
Reference: 0000006583 In stock > 10 items
€11.84
€14.57 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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