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Machine tap M22x1 DIN 374/35 C HSSE Fra
0000008220
€48.55 tax inc.
Net price: €39.47
Description
Material HSSE
Thread size M22x1
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M22x1 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M22x1 |
| Thread Pitch P | 1 mm |
| Helix Angle | 35° |
| Overall Length l1 | 125 mm |
| Flute Length l2 | 27 mm |
| Length l3 | 48 mm |
| Shank Diameter d2 | 18 mm |
| Square Drive Size a | 14.5 mm |
| Tap Drill Diameter | 21 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 M22x1 tap has a reduced shank to DIN 374: diameter 18 mm, square drive 14.5 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 M22x1 thread.
M22x1 spiral-flute machine tap – metric fine thread for precision joints
The Fra M22x1 spiral flute machine tap from the metric fine thread series is designed for producing leak-tight joints in hydraulic and pneumatic systems. HSSE steel construction with 5% 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. The form C chamfer makes the tool particularly suitable for blind tapping close to the bottom of the hole. The 6H tolerance according to DIN 374 meets precision manufacturing requirements.
Key benefits of the M22x1 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 374 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 ER32 and ER40 tool holders and tapping chucks with axial compensation for CNC machining centers and automatic lathes
The M22x1 spiral flute tap is well suited to the production of valve blocks and industrial valves and fittings requiring leak-tight threaded connections. The fine pitch of 1 mm provides a larger contact area than the standard M22x2.5 thread. The tap drill diameter for the M22x1 thread is 21 mm according to metric fine thread tables.
Cutting data for the M22x1 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 72-289 | 72-289 |
| MStainless steel | 5-10 | 72-145 | 72-145 |
| KCast iron | 5-15 | 72-217 | 72-217 |
| NAluminum | 10-25 | 145-362 | 145-362 |
Thread preparation M22x1 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 21 mm
3 Tapping
M22x1
✓ 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 M22x1 HSSE machine tap for metric fine threads performs well in structural steels with a tensile strength up to 900 MPa, stainless steels, aluminum, and brass. The fine pitch of 1 mm ensures leak-tight connections in hydraulic applications up to 400 bar.
For the M22x1 metric fine thread in tolerance class 6H, the tap drill diameter should be 21 mm. The permissible hole tolerance range is 21.0-21.2 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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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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