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Machine tap M30x3 DIN 374 B HSSE Fra
10576
Thread size: M30x361 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
€58.26 tax inc.
Net price: €47.37
Description
Material HSSE
Thread size M30x3
ChamferB (3.5–5.5) threads
Standard DIN 374
Technical data for the M30x3 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M30x3 |
| Thread Pitch P | 3 mm |
| Overall Length l1 | 150 mm |
| Flute Length l2 | 27 mm |
| Shank Diameter d2 | 22 mm |
| Square Drive Size a | 18 mm |
| Tap Drill Diameter | 27 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 M30x3 tap has a reduced shank according to DIN 374: diameter 22 mm, square size 18 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 M30x3 thread.
M30x3 metric fine thread machine tap – Fra HSSE for special applications
Fra offers an M30x3 fine-thread machine tap made of HSSE high-speed steel with 5% cobalt for specialized structural applications. The 3 mm pitch falls between the M30x3.5 coarse thread and typical fine threads, offering a balance between assembly speed and strength. The 6H tolerance in accordance with DIN 374 guarantees dimensional repeatability. As a tap specialist, Fra guarantees high manufacturing quality.
Why choose the Fra M30x3 machine tap
- Manufacturer Fra as a specialist in special-purpose taps, guarantees high manufacturing quality and accurate thread geometry
- Fine thread with a 3 mm pitch offers a balance between the assembly speed of a coarse thread and the strength of a fine thread
- HSSE steel with 5% cobalt guarantees a hardness of 65-67 HRC and heat resistance up to 650°C, extending cutting edge life
- Tolerance 6H according to DIN 374 ensures precise thread production and full interchangeability with fasteners
- Material versatility covering structural steels up to 800 MPa, alloy steels, and gray and ductile cast iron
- Recommended tap drill diameter 27 mm for the M30x3 metric fine thread ensures optimal thread engagement
The Fra M30x3 machine tap is used in specialized machine structures and heavy industry where greater strength than a coarse thread provides is required while maintaining relatively fast assembly. 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 | 53-212 | 159-636 |
| MStainless steel | 5-10 | 53-106 | 159-318 |
| KCast iron | 5-15 | 53-159 | 159-477 |
| NAluminum | 10-25 | 106-265 | 318-795 |
Thread preparation M30x3 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 27.0 mm
3 Tapping
M30x3
✓ 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 M30x3 fine thread provides approximately 15-20% higher tensile strength than the M30x3.5 coarse thread while maintaining relatively fast assembly and good fastener availability.
The recommended tap drill diameter for the M30x3 metric fine thread is 27 mm. Precise hole machining ensures full thread engagement.
The M30x3 thread is used in specialized machine structures and heavy industry where greater strength than a coarse thread provides is required while maintaining relatively fast assembly.
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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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