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Machine Tap M11x0.75 DIN 374/35 C HSSE
0000008314
€33.02 tax inc.
Net price: €26.84
Description
Material HSSE
Thread size M11x0.75
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M11x0.75 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M11x0.75 |
| Thread Pitch P | 0.75 mm |
| Helix Angle | 35° |
| Overall Length l1 | 90 mm |
| Flute Length l2 | 20 mm |
| Length l3 | 39 mm |
| Shank Diameter d2 | 8 mm |
| Square Drive Size a | 6.2 mm |
| Tap Drill Diameter | 10.25 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 follow a right-hand helix 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 clear, and the cutting edges do not encounter packed chips. The M11x0.75 tap has a reduced shank to DIN 374: diameter 8 mm, square drive 6.2 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 0.75 mm/rev, equal to the pitch of the M11x0.75 thread.
M11x0.75 spiral-flute machine tap – metric fine thread for precision joints
The M11x0.75 spiral flute machine tap from the fine-thread series is designed for cutting special threads in the machinery industry. The 0.75 mm pitch provides a fine thread profile ideal for connections requiring excellent sealing and vibration resistance. HSSE steel with 5% cobalt ensures a hardness of 65-67 HRC and thermal stability up to 650°C in the cutting zone. Its form C chamfer makes the tool particularly suitable for blind hole tapping close to the bottom of the hole. The 6H tolerance in accordance with DIN 374 meets precision production requirements.
Technical specifications of the M11x0.75 spiral flute machine tap
- Durability and wear resistance thanks to HSSE steel with a hardness of 65-67 HRC, which retains its cutting properties at temperatures up to 650°C
- Tolerance class 6H precision in accordance with DIN 374 guarantees full thread interchangeability and dimensional repeatability in series production
- Compliance with DIN 374 for metric fine threads ensures standardized dimensions and compatibility with tools from European manufacturers
- Material versatility covering structural steels up to 900 MPa, 304/316 austenitic stainless steels, aluminum, and copper alloys
- Compatibility with ER25 holders and tapping chucks with axial compensation for CNC machining centers and automatic lathes
- 35° spiral flute geometry directs chips backward during cutting, which is essential when tapping blind holes
The M11x0.75 spiral flute tap is used in steel structures and industrial metalworking to make special connections. The fine pitch of 0.75 mm provides a larger contact area and resistance to loosening. The tap drill diameter for the M11x0.75 thread is 10.2 mm according to metric fine thread tables.
Cutting data for the M11x0.75 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 145-579 | 109-434 |
| MStainless steel | 5-10 | 145-289 | 109-217 |
| KCast iron | 5-15 | 145-434 | 109-326 |
| NAluminum | 10-25 | 289-723 | 217-542 |
Thread preparation M11x0.75 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 10.25 mm
3 Tapping
M11x0.75
✓ 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)
Frequently asked questions
The M11x0.75 fine-thread HSSE machine tap performs well in structural steels up to 900 MPa, stainless steels, aluminum, and brass. The fine pitch of 0.75 mm provides improved sealing and vibration resistance in special connections.
For the M11x0.75 metric fine thread in tolerance class 6H, the tap drill diameter should be 10.25 mm. The permissible hole tolerance range is 10.25-10.45 mm. A smaller hole increases cutting torque and the risk of tool breakage.
Yes, cooling with an oil emulsion at a minimum concentration of 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 minimal lubrication.
Product accessories
Machine Tap M11x0.75 DIN 374 B HSSE
Reference: 0000008315 In stock < 10 items
€23.68
€29.13 brutto
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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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