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Description
Material HSSE
Thread size M3
ChamferC (2–3) threads
Standard DIN 376
Technical data for the M3 HSSE INOX general-purpose machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M3 |
| Thread Pitch P | 0.5 mm |
| Overall Length l1 | 56 mm |
| Flute Length l2 | 11 mm |
| Shank Diameter d2 | 2.2 mm |
| Square Drive Size a | 1.8 mm |
| Tap Drill Diameter | 2.5 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
Where chips remain in a straight-flute tap
The flute holds the chips until the tap is reversed out
The straight flute runs parallel to the tap axis. There is no helix to carry chips upward. The chamfer cutting edges are not ground at an angle, so they do not push chips downward. Short chips break into fragments and remain in the flute, next to the cutting edges that produced them. They leave the hole only when the tap is backed out. The M3 x0.5 tap has a reduced shank to DIN 376: diameter 2.2 mm, square size 1.8 mm.
1
Straight flute – chips remain in the flute, next to the cutting edges that produced them.
2
Chamfer C: 2–3 incomplete threads on the tapered lead.
3
The tap rotates clockwise to cut a right-hand thread.
4
Individual fragments exit at the top, onto the workpiece surface.
5
A few fragments fall below the tip and exit through the bottom of the hole.
6
Feed 0.5 mm/rev, equal to the pitch of the M3 x0.5 thread.
M3 INOX machine tap – for through and blind holes
The M3 INOX machine tap with a long shank according to DIN 376 is a professional tool for cutting internal M3 threads in stainless and structural steels. Its HSSE high-speed steel construction with 5% cobalt provides a hardness of 66 HRC and high heat resistance in the cutting zone up to 650°C. Form C with straight flutes allows both through and blind holes to be tapped without changing tools. The 6H tolerance according to DIN 376 ensures dimensional repeatability. The M3 general-purpose machine tap is intended for toolrooms and CNC machining center operators.
Main advantages of the M3 general-purpose HSSE tap
- Long shank to DIN 376 provides increased clamping rigidity and eliminates vibration at high spindle speeds on CNC machines
- Durability and heat resistance thanks to HSSE steel with 5% cobalt, which maintains its cutting properties at temperatures up to 650°C in the contact zone
- Precision to tolerance class 6H ensures the dimensional accuracy required in the production of electronic and precision mechanical components
- Compatibility with ER11 holders and tapping chucks with axial compensation for synchronous tapping on CNC and conventional machines
- Designed for stainless steels austenitic 304 and 316 and difficult-to-machine materials requiring tools with enhanced resistance
- M3 machine tap for through holes and blind holes with form C evacuates chips correctly in both hole types without the risk of thread damage
The M3 HSSE machine tap is used in electronics, precision engineering and the production of industrial automation components. Cooling with an EP emulsion at a minimum concentration of 8% extends tool life by a factor of 2-3. The tap drill diameter for the M3 thread is 2.5 mm for a coarse thread with a pitch of 0.5 mm.
Cutting data for the universal M3 HSSE INOX machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 531-2122 | 266-1061 |
| MStainless steel / INOX | 5-10 | 531-1061 | 266-530 |
| KCast iron | 5-15 | 531-1592 | 266-796 |
| NAluminum | 10-25 | 1061-2653 | 530-1326 |
Thread preparation M3
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 2.5 mm
3 Tapping
M3
✓ Done!
Tolerance 6H
Standard: DIN 376 | Chamfer: C (straight) | Application: general-purpose (through and 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
With proper cooling and lubrication, the M3 HSSE tap produces 400-600 threads in structural steel or 250-350 threads in stainless steel. Dry machining reduces tool life by 40-50%.
Yes, the M3 HSSE tap with 5% cobalt is designed for austenitic stainless steels 304 and 316. The cobalt addition increases heat resistance up to 650°C in the cutting zone.
An HSSE tap contains 5% cobalt, which increases hardness from 64 to 66 HRC and heat resistance to 650°C. HSSE is suitable for stainless steels, while HSS is suitable only for structural steels up to 800 MPa.
Product accessories
Hand tap M3 DIN 352/3 6H HSS Bucovice
Reference: 0000004910 In stock > 10 items
€5.53
€6.80 brutto
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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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