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Machine Tap M30x1.5 DIN 374/35 C HSSE
0000008946
€76.07 tax inc.
Net price: €61.84
Description
Material HSSE
Thread size M30x1.5
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M30x1.5 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M30x1.5 |
| Thread Pitch P | 1.5 mm |
| Helix Angle | 35° |
| Overall Length l1 | 150 mm |
| Flute Length l2 | 22 mm |
| Length l3 | 62 mm |
| Shank Diameter d2 | 22 mm |
| Square Drive Size a | 18 mm |
| Tap Drill Diameter | 28.5 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 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 M30x1.5 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 1.5 mm/rev, equal to the pitch of the M30x1.5 thread.
M30x1.5 spiral flute machine tap – metric fine thread for industrial hydraulics
The fine-thread tap series designed for industrial hydraulics includes the M30x1.5 spiral flute machine tap with a pitch of 1.5 mm. The 6H tolerance in accordance with DIN 374 guarantees leak-tight threaded connections in pressure systems up to 400 bar. Made from HSSE steel with 5% cobalt, it provides a hardness of 65-67 HRC and heat resistance up to 650°C in the cutting zone. The 35° spiral flute directs chips backward when tapping blind holes in valve blocks and hydraulic housings.
Why choose the M30x1.5 spiral flute machine tap
- Compliance with DIN 374 for metric fine threads ensures standardized dimensions and full interchangeability with tools from European manufacturers
- Designed for industrial hydraulics includes valve blocks, cylinder bodies, directional control valves, and pressure system components rated up to 400 bar
- Tolerance class 6H precision guarantees leak-tight threaded connections without the need for additional seals in hydraulic applications
- Durability of HSSE steel with 5% cobalt allows operation at temperatures up to 650°C without loss of the cutting edge's mechanical properties
- Form C chamfer for blind holes allows tapping close to the bottom of the hole with a minimal incomplete thread length of 2-3 pitches
- Compatibility with ER40 holders and tapping chucks with axial compensation for CNC machining centers and automatic lathes
The M30x1.5 spiral flute tap is used in the manufacture of valve blocks and industrial valves and fittings requiring leak-tight threaded connections. The fine pitch of 1.5 mm provides a larger contact area than the standard M30x3.5 thread. The tap drill diameter for the M30x1.5 thread is 28.5 mm according to metric fine thread tables.
Cutting data for the M30x1.5 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 53-212 | 80-318 |
| MStainless steel | 5-10 | 53-106 | 80-159 |
| KCast iron | 5-15 | 53-159 | 80-238 |
| NAluminum | 10-25 | 106-265 | 159-398 |
Thread preparation M30x1.5 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 28.5 mm
3 Tapping
M30x1.5
✓ 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 M30x1.5 HSSE metric fine machine tap is suitable for structural steels up to 900 MPa, stainless steels, aluminum, and brass. The 1.5 mm pitch is used in industrial hydraulics and pressure valves and fittings.
For the M30x1.5 metric fine thread in tolerance class 6H, the tap drill diameter should be 28.5 mm. The permissible hole tolerance range is 28.5-28.7 mm. A smaller hole increases cutting torque.
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.
Product accessories
Machine tap M30x1.5 DIN 374 C HSSE Narex
Reference: 0000008328 In stock < 10 items
€46.05
€56.64 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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