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Description
Material HSSE
Thread size M22
ChamferC (2–3) threads
Standard DIN 376
Technical data for the M22 blind-hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M22 |
| Thread Pitch P | 2.5 mm |
| Helix Angle | 35° |
| Overall Length l1 | 140 mm |
| Flute Length l2 | 34 mm |
| Length l3 | 48 mm |
| Shank Diameter d2 | 18 mm |
| Square Drive Size a | 14.5 mm |
| Tap Drill Diameter | 19.5 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 screw in a meat grinder. The bottom of the hole stays clean, and the cutting edges do not encounter packed chips. The M22 x2.5 tap has a reduced shank according to DIN 376: diameter 18 mm, square size 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 2.5 mm/rev, equal to the pitch of the M22 x2.5 thread.
M22 spiral-flute machine tap – for blind holes
In this range, the manufacturer offers an M22 spiral flute machine tap with a long shank for cutting large internal threads in machine housings. Made of HSSE steel with 5% added cobalt, the tool meets DIN 376 requirements and provides a hardness of 65-67 HRC. The 35° spiral flute ensures controlled chip evacuation when tapping blind holes. The form C chamfer enables tapping close to the bottom of a blind hole, leaving a minimal incomplete thread length of 2-3 threads.
Advantages and applications of the M22 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 376 guarantees the dimensional repeatability required in series production of precision components
- Designed for series production includes machine housings, industrial gearboxes, engine blocks, and large structural components
- Conforms to DIN 376 for long-shank taps provides greater clamping rigidity and standardized dimensions
- 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 M22 machine tap is used in the production of machine housings and industrial gearboxes requiring large internal threads. The standard pitch of the M22 thread is 2.5 mm, with a tap drill diameter of 19.5 mm. The tool works with standard mineral oil-based tapping lubricants and coolant emulsions.
Cutting data for the M22 blind-hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 72-289 | 180-722 |
| MStainless steel | 5-10 | 72-145 | 180-362 |
| KCast iron | 5-15 | 72-217 | 180-542 |
| NAluminum | 10-25 | 145-362 | 362-905 |
Thread preparation M22 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 19.5 mm
3 Tapping
M22
✓ Done!
Tolerance 6H
Standard: DIN 376 | 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 M22 HSSE spiral flute machine tap is suitable for structural steels up to 900 MPa, 304/316 austenitic stainless steels, aluminum, brass, and gray cast iron. The M22 size is used in steel structures and machine building.
For an M22x2.5 thread of tolerance class 6H, the recommended tap drill diameter is 19.5 mm. The hole tolerance range should be 19.5 to 19.75 mm. Exceeding the upper limit results in an incomplete thread profile.
Yes, cooling with an oil emulsion of at least 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 minimum quantity lubrication (MQL).
Product accessories
HSSE 19.5 cobalt metal drill bit DIN 338
Reference: 13301 In stock > 10 items
€19.74
€24.28 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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