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Description
Material HSSE-PM
Thread size M12
ChamferB (3.5–5.5) threads
Standard DIN 376
Technical data for the M12 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M12 |
| Thread Pitch P | 1.75 mm |
| Overall Length l1 | 110 mm |
| Flute Length l2 | 18 mm |
| Shank Diameter d2 | 9 mm |
| Square Drive Size a | 7 mm |
| Tap Drill Diameter | 10.2 mm |
| Chamfer | B (3.5÷5.5) P |
| Thread tolerance | 6H |
How the type B through-hole chamfer pushes chips down the hole
Chips exit at the bottom instead of returning through the thread
The type B through-hole chamfer has a chip breaker at the tip of the tap – an angled notch in the cutting edges. The chip breaker directs chips down the hole, ahead of the tap tip. The chips curl into a spring shape, break into short pieces and exit the hole on the other side of the workpiece. The threads already cut remain clean because the chips do not pass through them on their way up. The M12 x1.75 tap has a reduced shank to DIN 376: diameter 9 mm, square size 7 mm.
1
Straight flute – chips do not enter it; the flute carries lubricant to the cutting edges.
2
The chip breaker at the tip of the tap directs chips down the hole.
3
The tap rotates clockwise to cut a right-hand thread.
4
B chamfer: 3.5–5.5 incomplete threads on the entry taper.
5
The chips break into segments: individual pieces at the top of the hole, with progressively more farther down. They fall out below the workpiece.
6
Feed 1.75 mm/rev, equal to the pitch of the M12 x1.75 thread.
M12 machine tap for through holes – HSSE-PM powder metallurgy steel with long shank
The M12 machine tap for through holes, made of HSSE-PM powder metallurgy steel, is a professional tool for the most demanding applications in high-volume production of mechanical components. Powder metallurgy technology provides a uniform microstructure and a hardness of 67-69 HRC, significantly exceeding the performance of conventional HSSE taps with a standard structure. The long shank in accordance with DIN 376 guarantees minimal tool runout in the popular M12 size used in machine building and steel structures. Powder metallurgy steel construction provides 2-3 times the tool life of standard tools while maintaining full accuracy.
Key benefits of the M12 HSSE-PM machine tap
- HSSE-PM powder metallurgy steel with a uniform microstructure, provides a hardness of 67-69 HRC and 2-3 times the tool life of conventional HSSE taps under stable cutting conditions
- Long shank to DIN 376 provides greater clamping rigidity and minimal runout, which is crucial in high-volume production on automated tapping lines
- Popular M12 size widely used in machine building, steel structures, and series production of mechanical components requiring reliable threaded connections
- Increased wear resistance due to the uniform structure of chromium and vanadium carbides, ensuring consistent cutting performance throughout the service life
- Optimal cutting edge geometry for difficult-to-machine materials, 304/316 austenitic stainless steels, and titanium alloys requiring special cutting parameters
- Tolerance class 6H in accordance with DIN 376 ensures thread accuracy and full interchangeability with fasteners used in the machinery and automotive industries
The M12 HSSE-PM machine tap is used on automated tapping lines in high-volume automotive production and the aerospace and medical industries requiring maximum productivity and minimal downtime. Powder metallurgy steel is particularly effective when tapping austenitic stainless steels and materials prone to adhesion. Cooling with an emulsion containing EP additives at a concentration of 8-10% is recommended.
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 133-531 | 233-929 |
| MStainless steel | 5-10 | 133-265 | 233-464 |
| KCast iron | 5-15 | 133-398 | 233-696 |
| NAluminum | 10-25 | 265-663 | 464-1160 |
Thread preparation M12 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 10.2 mm
3 Tapping
M12
✓ Done!
Tolerance 6H
Standard: DIN 376 | Chamfer: B (straight) | Application: through 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
HSSE-PM powder metallurgy steel has a uniform microstructure, a higher hardness of 67-69 HRC and better wear resistance than conventional HSSE. It provides 2-3 times the tool life.
The M12 HSSE-PM tap is ideal for austenitic stainless steels, titanium alloys, nickel superalloys and other difficult-to-machine materials and materials prone to adhesion.
The M12 HSSE-PM tap achieves 2-3 times the tool life of conventional HSSE taps. It cuts 500-800 threads in stainless steel with proper cooling.
Product accessories
Counterbore 20X10.2 M12 DIN 373 HSS
Reference: 0000003391 In stock > 10 items
€22.89
€28.16 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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