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Description
Material HSSE
Thread size M5x0.5
ChamferC (2–3) threads
Standard ISO 529
Technical data for the M5x0.5 blind hole tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M5x0.5 |
| Thread Pitch P | 0.5 mm |
| Helix Angle | 35° |
| Overall Length l1 | 58 mm |
| Flute Length l2 | 16 mm |
| Length l3 | 24 mm |
| Shank Diameter d2 | 5 mm |
| Square Drive Size a | 4 mm |
| Tap Drill Diameter | 4.5 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
How a spiral flute tap evacuates chips from a blind hole
The 35° flute works like a screw conveyor
The flutes of this tap follow a right-hand helix at an angle of 35° to the axis. The tap rotates clockwise and advances into the hole. The chip cut by the chamfer enters the flute, and the helix carries it upward like the auger in a meat grinder. The bottom of the hole stays clean, and the cutting edges do not encounter packed chips. The shank of the M5x0.5 tap has a diameter of 5 mm and a square size of 4 mm.
1
The 35° 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 0.5 mm/rev, equal to the pitch of the M5x0.5 thread.
M5x0.5 spiral flute machine tap – metric fine thread to ISO 529
The M5x0.5 spiral flute machine tap is a professional tool from Fra for producing metric fine threads in blind holes. The 35° spiral flute design ensures efficient rearward chip evacuation, eliminating the risk of jamming during blind hole tapping. HSSE steel with 5% cobalt ensures a hardness of 65-67 HRC and thermal stability up to 650°C. The 6H tolerance in accordance with ISO 529 ensures international compatibility and dimensional repeatability. The tool is intended for manufacturers of electronics and precision mechanical components.
Key benefits of the M5x0.5 spiral flute machine tap
- 35° spiral flute geometry directs chips backward during cutting, which is essential when tapping blind holes without the risk of damaging the hole bottom
- Durability enhanced by the addition of 5% cobalt allows operation at temperatures up to 650°C in the cutting zone without loss of the tool's mechanical properties
- Tolerance class 6H precision in accordance with ISO 529 guarantees full thread interchangeability and compatibility with tools from global manufacturers
- Material versatility covering structural steels with strengths up to 900 MPa, austenitic stainless steels, aluminum, and copper and brass alloys
- Chamfer form C allows tapping close to the bottom of a blind hole with a minimal incomplete thread length of just 2-3 pitches
- Compatibility with ER16 and ER20 tool holders and tapping chucks with axial compensation for CNC machining centers
The M5x0.5 spiral flute tap is suitable for manufacturing electronic components and precision mechanisms requiring leak-tight threaded connections. The fine pitch of 0.5 mm provides a larger contact area than the standard M5x0.8 thread. The tap drill diameter for the M5x0.5 thread is 4.5 mm in accordance with metric fine thread tables.
Cutting data for the M5x0.5 blind hole machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 318-1273 | 159-636 |
| MStainless steel | 5-10 | 318-637 | 159-318 |
| KCast iron | 5-15 | 318-955 | 159-478 |
| NAluminum | 10-25 | 637-1592 | 318-796 |
Thread preparation M5x0.5 in a blind hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 4.5 mm
3 Tapping
M5x0.5
✓ Done!
Tolerance 6H
Standard: ISO 529 | 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 M5x0.5 HSSE machine tap for metric fine threads in accordance with ISO 529 is suitable for structural steels up to 900 MPa, stainless steels, aluminum, and brass. The fine pitch of 0.5 mm provides improved leak tightness in precision joints.
For the M5x0.5 metric fine thread in tolerance class 6H, the tap drill diameter should be 4.5 mm. The permissible hole tolerance range is 4.5-4.6 mm. A smaller hole increases cutting torque and the risk of tool breakage.
Yes, cooling with tapping oil or minimum quantity lubrication (MQL) is recommended due to the small diameter. The tool requires careful handling and low cutting speeds.
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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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