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Machine tap M15x1 DIN 374/35 C HSSE Fra
0000007140
€33.99 tax inc.
Net price: €27.63
Description
Material HSSE
Thread size M15x1
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M15x1 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M15x1 |
| Thread Pitch P | 1 mm |
| Helix Angle | 35° |
| Overall Length l1 | 100 mm |
| Flute Length l2 | 10 mm |
| Length l3 | 42 mm |
| Shank Diameter d2 | 12 mm |
| Square Drive Size a | 9 mm |
| Tap Drill Diameter | 14 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 M15x1 tap has a reduced shank to DIN 374: diameter 12 mm, square drive 9 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 mm/rev, equal to the pitch of the M15x1 thread.
M15x1 spiral flute machine tap – metric fine thread for special connections
The M15x1 spiral flute machine tap from the Fra metric fine thread series is designed to cut special threads in the machinery industry. HSSE steel construction with 5% added cobalt provides a hardness of 65-67 HRC and high cutting edge heat resistance up to 650°C. The 35° spiral flute ensures controlled chip evacuation when tapping deep blind holes. Its form C chamfer makes the tool particularly suitable for blind tapping close to the bottom of the hole. The 6H tolerance in accordance with DIN 374 meets precision manufacturing requirements.
Key features of the M15x1 spiral flute machine tap
- Manufacturing precision to 6H tolerance guarantees dimensional repeatability and full thread interchangeability in series production of mechanical components
- Compliance with DIN 374 confirms quality and ensures standardized dimensions for special metric fine threads of diameter M15
- Durability of HSSE steel with 5% cobalt allows operation at temperatures up to 650°C without loss of the cutting edge's mechanical properties
- Compatibility with ER25 and ER32 tool holders and tapping heads for CNC machining centers with synchronous tapping capability
- Designed for industrial pneumatics includes valve bodies, cylinders, directional control valves, and pressure system components
- 35° spiral flutes ensure consistent chip evacuation when tapping blind holes up to 2.5D deep without the risk of breakage
The M15x1 spiral flute tap performs well in maintenance departments for special thread restoration and production machinery repairs. The tap drill diameter is 14 mm for the M15x1 metric fine thread. The tool works with standard mineral oil-based tapping lubricants and coolant emulsions.
Cutting data for the M15x1 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 106-424 | 106-424 |
| MStainless steel | 5-10 | 106-212 | 106-212 |
| KCast iron | 5-15 | 106-318 | 106-318 |
| NAluminum | 10-25 | 212-531 | 212-531 |
Thread preparation M15x1 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 14 mm
3 Tapping
M15x1
✓ 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 M15x1 HSSE metric fine thread machine tap performs well in structural steels up to 900 MPa, stainless steels, aluminum, and brass. The M15 size is used in industrial pneumatics and special valves and fittings requiring leak-tight connections.
For the M15x1 metric fine thread in tolerance class 6H, the tap drill diameter should be 14 mm. The permissible hole tolerance range is 14.0-14.2 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.
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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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