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Machine Tap M64x3 DIN 374 B HSSE
Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
961149
Thread size: M64x361 sizes of this tap
M5x0,5M10x1M10x1,25M11x0,75M12x1M12x1,25M12x1,5M14x1M14x1,25M14x1,5M15x1M15x1,25M15x1,5M16x1M16x1,5M17x1M18x1M18x1,5M18x2M20x0,75M20x1M20x1,25M20x1,5M20x2M22x1,5M22x2M24x1M24x1,5M24x2M25x1M25x1,5M25x2M26x1,5M27x1,5M28x1,5M30x1,5M30x2M30x3M32x1M32x1,5M32x2M33x1,5M33x2M35x1,5M36x1,5M36x2M36x3M38x1,5M39x1,5M39x2M40x1,5M42x1,5M42x2M42x3M48x1,5M50x2M52x2M56x3M60x3M64x3M64x4
€712.11 tax inc.
Net price: €578.95
Brak w magazynie
Description
Material HSSE
Thread size M64x3
ChamferB (3.5–5.5) threads
Standard DIN 374
Technical data for the M64x3 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M64x3 |
| Thread Pitch P | 3 mm |
| Overall Length l1 | 220 mm |
| Flute Length l2 | 75 mm |
| Shank Diameter d2 | 50 mm |
| Square Drive Size a | 39 mm |
| Tap Drill Diameter | 61 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 chamfer for through holes has a chip breaker at the tip of the tap – an angled cut in the cutting edges. The chip breaker directs the chip 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. The threads already cut remain clean because the chip does not pass through them on its way up. The M64x3 tap has a reduced shank according to DIN 374: diameter 50 mm, square size 39 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 3 mm/rev, equal to the pitch of the M64x3 thread.
M64x3 fine thread machine tap – HSSE for heavy industry
The HSSE tap range designed for professional toolrooms includes an M64x3 fine thread machine tap in cobalt-alloyed steel. The 6H tolerance in accordance with DIN 374 guarantees the dimensional repeatability essential for producing structural components with an extremely large diameter of 64 mm. Made of high-speed steel with 5% cobalt, the tool achieves a hardness of 65-67 HRC and thermal resistance up to 650°C. The M64x3 fine thread is used in heavy industry and the power industry.
Technical specifications of the M64x3 metric fine thread machine tap
- Extremely large M64 diameter used in heavy industry, the power industry, turbine manufacturing, and the largest steel structures
- Fine thread with a 3 mm pitch offers significantly higher tensile strength than the M64x6 coarse thread
- 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 374 ensures thread accuracy and full interchangeability with fasteners
- Material versatility covering structural steels up to 800 MPa, alloy steels, gray cast iron and ductile iron
- The recommended hole diameter of 61 mm for the M64x3 metric fine thread ensures an optimal percentage of thread engagement
The M64x3 machine tap is used in the power industry, turbine and mining machinery manufacturing, and extremely large steel structures. Form B with straight flutes directs chips forward. Cooling with an oil emulsion 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 | 25-99 | 75–297 |
| MStainless steel | 5-10 | 25-50 | 75–150 |
| KCast iron | 5-15 | 25-75 | 75–225 |
| NAluminum | 10-25 | 50-124 | 150–372 |
Thread preparation M64x3 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 61 mm
3 Tapping
M64x3
✓ Done!
Tolerance 6H
Standard: DIN 374 | 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 M64x3 fine thread provides approximately 100% higher tensile strength, better sealing, and greater resistance to self-loosening, with a longer assembly time.
The recommended tap drill diameter for the M64x3 metric fine thread is 61 mm. Precise hole machining ensures full thread engagement.
The M64x3 thread is used in the power industry, turbine construction, mining machinery, and steel structures of extreme dimensions where high joint strength is required.
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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 M64x3 DIN 374 B HSSE Podgląd zdjęć produktu
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