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Machine Tap M30x2 DIN 374/35 C HSSE
0000008702
€71.21 tax inc.
Net price: €57.89
Description
Material HSSE
Thread size M30x2
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M30x2 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M30x2 |
| Thread Pitch P | 2 mm |
| Helix Angle | 35° |
| Overall Length l1 | 150 mm |
| Flute Length l2 | 27 mm |
| Length l3 | 62 mm |
| Shank Diameter d2 | 22 mm |
| Square Drive Size a | 18 mm |
| Tap Drill Diameter | 28 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 M30x2 tap has a reduced shank to DIN 374: diameter 22 mm, square drive 18 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 2 mm/rev, equal to the pitch of the M30x2 thread.
M30x2 spiral flute machine tap – for metric fine threads
In this range, the manufacturer offers an M30x2 spiral flute machine tap with an intermediate pitch of 2 mm for precision joints in industrial structures. Made of HSSE steel with 5% cobalt, the tool meets DIN 374 requirements for fine threads and provides a hardness of 65-67 HRC. The 35° spiral flute ensures controlled chip evacuation when tapping blind holes. The form C chamfer allows tapping close to the bottom of a blind hole, with a minimal unthreaded portion of 2-3 threads.
Advantages and applications of the M30x2 spiral-flute machine tap
- Compatibility with ER40 holders and tapping chucks with axial compensation for CNC machining centers and automatic lathes
- Tolerance class 6H precision in accordance with DIN 374 guarantees the dimensional repeatability required in series production of precision components
- Designed for steel structures includes welded components, machine frames, load-bearing structures, and bolted connections with increased strength
- Conforms to DIN 374 for metric fine threads ensures standardized dimensions and full interchangeability with tools from European manufacturers
- Durability of HSSE steel allows machining of structural steels up to 900 MPa, stainless steels, and aluminum and copper alloys
- 35° geometry with form C ensures consistent chip evacuation when tapping blind holes to a depth of 2D
The M30x2 machine tap is used in the production of machine housings and industrial gearboxes requiring threads with increased strength. The fine pitch of 2 mm provides a larger contact area than the standard M30x3.5 thread. The tap drill diameter for the M30x2 thread is 28 mm according to fine thread tables.
Cutting data for the M30x2 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 53-212 | 106-424 |
| MStainless steel | 5-10 | 53-106 | 106-212 |
| KCast iron | 5-15 | 53-159 | 106-318 |
| NAluminum | 10-25 | 106-265 | 212-530 |
Thread preparation M30x2 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 28 mm
3 Tapping
M30x2
✓ 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 M30x2 HSSE metric fine machine tap is suitable for structural steels up to 900 MPa, stainless steels, aluminum, and brass. The intermediate pitch of 2 mm is used in steel structures requiring connections with increased strength.
For the M30x2 metric fine thread in tolerance class 6H, the recommended tap drill diameter is 28 mm. The hole tolerance zone should fall within the range of 28.0 to 28.2 mm. Exceeding the upper limit results in an incomplete thread profile.
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 under pressure is required when machining stainless steels.
Product accessories
Machine tap M30x2 DIN 374 B HSSE Narex
Reference: 0000007348 In stock < 10 items
€55.26
€67.97 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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