- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
Material HSSE
Thread size M12x1
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M12x1 left-hand HSSE INOX general-purpose machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M12x1 |
| Thread Pitch P | 1 mm |
| Overall Length l1 | 100 mm |
| Flute Length l2 | 20 mm |
| Shank Diameter d2 | 9 mm |
| Square Drive Size a | 7 mm |
| Tap Drill Diameter | 11 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 M12x1 tap has a reduced shank to DIN 374: diameter 9 mm, square size 7 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 counterclockwise – this is how it cuts a left-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 1 mm/rev, equal to the pitch of the M12x1 thread.
M12x1 INOX left-hand machine tap – for left-hand threads
This HSSE series model, designed for cutting M12x1 left-hand threads in stainless and structural steels, features a left-hand cutting direction. The M12x1 INOX left-hand machine tap has reversed flute geometry that ensures correct left-hand thread formation. With 5% added cobalt, the tool maintains a hardness of 66 HRC even at cutting zone temperatures up to 650°C. Form C with straight flutes provides general-purpose use in through holes and blind holes. The M12x1 left-hand HSSE machine tap is designed for toolrooms and manufacturers of special components.
Key advantages of the M12x1 left-hand tap
- Material versatility covering 304 and 316 austenitic stainless steels, structural steels up to 800 MPa, GGG40 ductile cast iron, and aluminum alloys
- Left-hand thread used in components protected against self-loosening, drive shafts and screws securing grinding wheels that rotate clockwise
- Compatibility with ER20 holders and collets for precise clamping on machining centers with axial compensation and reversible rotation
- Precision to tolerance class 6H for demanding fit tolerances in series production of mechanical components requiring left-hand threads
- Durability increased by the addition of cobalt in HSSE steel allows cutting 400-500 left-hand threads in structural steel with proper cooling
- M12x1 general-purpose left-hand machine tap with form C allows tapping of through and blind holes without changing tools
The M12x1 left-hand machine tap for through holes and blind holes is used in toolrooms and prototype shops for producing special components. Cooling with an oil emulsion at a minimum concentration of 8% or with tapping oil extends tool life by a factor of 2-3. The tap drill diameter for the M12x1 left-hand thread is 11 mm.
Cutting data for the M12x1 left-hand HSSE INOX general-purpose machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 133-531 | 133-531 |
| MStainless steel / INOX | 5-10 | 133-265 | 133-265 |
| KCast iron | 5-15 | 133-398 | 133-398 |
| NAluminum | 10-25 | 265-663 | 265-663 |
Thread preparation M12x1
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 11 mm
3 Tapping
M12x1
✓ Done!
Tolerance 6H
Standard: DIN 374 | 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
The M12x1 left-hand HSSE tap is suitable for 304 and 316 austenitic stainless steels, structural steels up to 800 MPa, ductile cast iron, and aluminum and brass alloys. It is not recommended for hardened steels above 45 HRC.
The nominal tap drill diameter for the M12x1 left-hand thread is 11 mm. The hole tolerance should be within the range of 10.9–11.1 mm. A hole at the lower tolerance limit produces a fuller thread profile, while one at the upper limit reduces tapping torque.
M12x1 left-hand threads are used in components protected against self-loosening, clockwise-rotating drive shafts, and screws securing grinding wheels. They prevent the joint from loosening under vibration.
Product accessories
Counterbore 20X10.2 M12 DIN 373 HSS
Reference: 0000003391 In stock > 10 items
€22.89
€28.16 brutto
Hand Tap M12X1 LH DIN 2181/2 6H HSS Fanar
Reference: 1001 In stock > 10 items
€12.63
€15.54 brutto
Reviews
No customer reviews for the moment.
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 |
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.