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Machine Tap M4.5x0.75 DIN 371 B SE OCYNK
Varel Varel
959013
€1.29 tax inc.
Net price: €1.05
Instant Shipping
W magazynie: 10-100 szt.
Description
Material HSSE
Thread size M4.5x0.75
ChamferB (3.5–5.5) threads
Standard DIN 371
Technical data for the M4.5x0.75 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M4.5x0.75 |
| Thread Pitch P | 0.75 mm |
| Overall Length l1 | 70 mm |
| Flute Length l2 | 7 mm |
| Length l3 | 25 mm |
| Shank Diameter d2 | 6 mm |
| Square Drive Size a | 4.9 mm |
| Tap Drill Diameter | 3.75 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 M4.5 x0.75 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 0.75 mm/rev, equal to the pitch of the M4.5 x0.75 thread.
M4.5x0.75 fine thread machine tap – HSSE with bright coating
The manufacturer offers an M4.5x0.75 fine thread machine tap made of HSSE high-speed steel with 5% cobalt and a bright protective coating for precision engineering applications. The 0.75 mm pitch is the standard coarse pitch for M4.5, but combined with a nonstandard diameter, it creates a unique solution for specialized designs. The bright protective coating prevents corrosion during storage and provides good lubricity during operation.
Benefits and applications of the M4.5x0.75 machine tap with bright coating
- Bright protective coating prevents corrosion during storage, provides good lubricity, and facilitates visual inspection of tool wear
- Nonstandard M4.5 size fills the gap between the common M4 and M5 sizes in designs with specific requirements
- HSSE steel with 5% cobalt guarantees a hardness of 65-67 HRC and heat resistance up to 650°C, extending cutting edge life
- The 6H tolerance in accordance with DIN 371 ensures thread accuracy and full interchangeability with fasteners
- Short shank to DIN 371, compatible with ER11 and ER16 collet chucks and tapping chucks with axial compensation
- Metric pitch of 0.75 mm in accordance with DIN 13, recommended tap drill diameter 3.7 mm
The M4.5x0.75 machine tap with bright coating is used in toolrooms, prototype shops, and manufacturing plants to produce components with a nonstandard diameter. The bright coating is an economical alternative to TiN or TiCN coatings. The tool requires cooling with an oil emulsion at a concentration of 6-8%.
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 354-1415 | 266-1061 |
| MStainless steel | 5-10 | 354-707 | 266-530 |
| KCast iron | 5-15 | 354-1061 | 266-796 |
| NAluminum | 10-25 | 707-1768 | 530-1326 |
Thread preparation M4.5x0.75 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 3.5 mm
3 Tapping
M4.5x0.75
✓ 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 bright protective coating prevents corrosion during storage, provides good lubricity, facilitates visual wear inspection, and is an economical alternative to TiN or TiCN coatings.
The 0.75 mm pitch is the standard coarse pitch for M4.5 according to DIN 13. There is no standard fine thread for M4.5, so every M4.5 thread has a pitch of 0.75 mm.
The recommended tap drill diameter for the M4.5x0.75 thread is 3.7 mm. Precise hole preparation ensures a fully formed thread profile.
Product accessories
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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 |
Machine Tap M4.5x0.75 DIN 371 B SE OCYNK Podgląd zdjęć produktu
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