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Description
Material HSSE-PM
Thread size M6
ChamferC (2–3) threads
Standard DIN 376
Technical data for the M6 blind-hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M6 |
| Thread Pitch P | 1 mm |
| Helix Angle | 40° |
| Overall Length l1 | 80 mm |
| Flute Length l2 | 18 mm |
| Length l3 | 30 mm |
| Shank Diameter d2 | 4.5 mm |
| Square Drive Size a | 3.4 mm |
| Tap Drill Diameter | 5 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
How a spiral flute tap evacuates chips from a blind hole
The 40° flute works like a screw conveyor
The flutes of this tap follow a right-hand helix at an angle of 40° 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 M6 x1 tap has a reduced shank according to DIN 376: diameter 4.5 mm, square size 3.4 mm.
1
The 40° 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 M6 x1 thread.
M6 spiral flute machine tap – premium FAN powder metallurgy steel
In this range, FAN offers an M6 spiral flute machine tap made of HSSE-PM powder metallurgy steel with a long shank for difficult-to-machine materials. Manufactured using powder metallurgy, the tool meets DIN 376 requirements and provides a hardness of 66-68 HRC while maintaining high toughness. The 40° spiral flute ensures aggressive chip evacuation when tapping blind holes. The long shank increases clamping rigidity and allows tapping in deep holes that the standard version cannot reach.
Advantages and applications of the M6 spiral flute machine tap
- Compatibility with ER16 and ER20 tool 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 stainless steels includes austenitic 304/316 and ferritic components, as well as difficult-to-machine materials requiring increased tool life
- Conforms to DIN 376 for long-shank taps provides greater reach and clamping rigidity in deep holes
- Durability of HSSE-PM powder metallurgy steel allows 800-1200 threads to be produced in stainless steel with proper cooling
- 40° geometry with form C provides aggressive chip evacuation when tapping blind holes to a depth of 2.5D
The M6 machine tap is used in the production of stainless steel components for medical and food processing applications requiring the highest thread quality. The standard pitch of the M6 thread is 1 mm, with a tap drill diameter of 5 mm. A premium tool recommended for applications requiring maximum tool life and thread surface quality.
Cutting data for the M6 blind-hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 265-1061 | 265-1061 |
| MStainless steel | 5-10 | 265-531 | 265-531 |
| KCast iron | 5-15 | 265-796 | 265-796 |
| NAluminum | 10-25 | 531-1326 | 531-1326 |
Thread preparation M6 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 5 mm
3 Tapping
M6
✓ 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 Fana M6 HSSE-PM tap is designed for austenitic and ferritic stainless steels, alloy steels, titanium, and difficult-to-machine nickel alloys. The uniform microstructure of powder metallurgy steel ensures stable operation in materials with inclusions.
For an M6x1 thread in tolerance class 6H, the tap drill diameter should be 5 mm. The permissible hole diameter range is 5.0-5.15 mm. A smaller hole increases cutting torque and the risk of tool breakage.
Fana HSSE-PM taps manufactured using powder metallurgy achieve a hardness of 66-68 HRC while maintaining high toughness. Compared with HSSE, they provide 30-50% longer tool life in stainless steels and better cutting edge resistance to chipping when machining materials with inclusions.
Product accessories
Fanar's M6 HSSE INOX 6g DIN 22 568 tooling
Reference: 0000007078 In stock < 10 items
€11.84
€14.57 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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