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Description
Material HSSE
Thread size M5
ChamferB (3.5–5.5) threads
Standard DIN 371
Technical data for the M5 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M5 |
| Thread Pitch P | 0.8 mm |
| Overall Length l1 | 70 mm |
| Flute Length l2 | 15 mm |
| Length l3 | 25 mm |
| Shank Diameter d2 | 6 mm |
| Square Drive Size a | 4.9 mm |
| Tap Drill Diameter | 4.2 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 form B through-hole chamfer has a chip breaker at the front of the tap – an angled cut in the cutting edges. The chip breaker directs chips down the hole, ahead of the tap tip. The chip curls into a coil, breaks into short pieces, and exits the hole on the other side of the workpiece. Threads already cut remain clean because chips do not pass through them on their way up. The M5 x0.8 tap has a reinforced shank in accordance with DIN 371: diameter 6 mm, square 4.9 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 0.8 mm/rev, equal to the pitch of the M5 x0.8 thread.
M5 through-hole machine tap – cobalt HSSE DIN 371
The HSSE-series M5 machine tap for through holes is designed for cutting internal M5 threads in through holes on CNC machine tools and conventional machines. High-speed steel construction with 5% added cobalt provides a hardness of 65-67 HRC and high heat resistance in the cutting zone up to 650°C. M5 is among the most popular metric thread sizes used in precision engineering, industrial electronics, and automotive series production.
Key features of the M5 machine tap for through holes
- Popular M5 size is among the most commonly used metric threads in precision engineering, industrial electronics, and automotive production
- HSSE steel with 5% cobalt guarantees a hardness of 65-67 HRC and thermal resistance up to 650°C, extending cutting edge life under intensive use
- Short shank in accordance with DIN 371 compatible with ER11 and ER16 collet chucks, collets, and tapping chucks with axial compensation
- The 6H tolerance to DIN 371 ensures thread precision and full interchangeability with standard-class fasteners
- Material versatility covering structural steels up to 800 MPa, alloy steels, austenitic stainless steels, cast iron, and aluminum
- Metric pitch of 0.8 mm in accordance with DIN 13 for M5 coarse threads, with a recommended tap drill diameter of 4.2 mm
The M5 machine tap for through holes is used in series production, on assembly lines, and in maintenance departments for thread repair and restoration. Form B with straight flutes ensures efficient chip evacuation when tapping through holes. The tool requires cooling with an oil emulsion at a minimum concentration of 6-8%.
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 318-1273 | 254-1018 |
| MStainless steel | 5-10 | 318-637 | 254-510 |
| KCast iron | 5-15 | 318-955 | 254-764 |
| NAluminum | 10-25 | 637-1592 | 510-1274 |
Thread preparation M5 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 4.2 mm
3 Tapping
M5
✓ Done!
Tolerance 6H
Standard: DIN 371 | 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
The M5 HSSE tap performs well in structural steels up to 800 MPa, alloy steels, austenitic stainless steels 304/316, gray and ductile cast iron, aluminum, and brass.
The recommended tap drill diameter for the M5 coarse thread is 4.2 mm. Accurate hole preparation ensures a full thread profile and minimizes the load on the tap.
With proper cooling, the M5 HSSE tap cuts 400-600 threads in structural steel and 200-300 threads in stainless steel. Dry operation reduces tool life by 30-40%.
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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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