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Machine tap M18x1.5 DIN 374 B HSSE
0000006564
Thread size: M18x1,561 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
€29.13 tax inc.
Net price: €23.68
Description
Material HSSE
Thread size M18x1.5
ChamferB (3.5–5.5) threads
Standard DIN 374
Technical data for the M18x1.5 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M18x1.5 |
| Thread Pitch P | 1.5 mm |
| Overall Length l1 | 110 mm |
| Flute Length l2 | 24 mm |
| Shank Diameter d2 | 14 mm |
| Square Drive Size a | 11 mm |
| Tap Drill Diameter | 16.5 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 M18x1.5 tap has a reduced shank according to DIN 374: diameter 14 mm, square size 11 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 1.5 mm/rev, equal to the pitch of the M18x1.5 thread.
M18x1.5 fine thread machine tap – HSSE for industrial hydraulics
The M18x1.5 metric fine machine tap is a professional tool for cutting internal threads with a pitch of 1.5 mm in the common M18 diameter used in industrial hydraulics and heavy machinery engineering. Made from HSSE high-speed steel with 5% added cobalt, it guarantees a hardness of 65-67 HRC and optimal tool life when machining difficult-to-machine materials requiring high precision. The M18x1.5 metric fine thread has one of the most popular pitches for the M18 diameter and is widely used in hydraulics and industrial machinery engineering. The tool is intended for professional toolrooms and hydraulic equipment manufacturers.
Advantages and applications of the M18x1.5 fine thread machine tap
- Fine thread with a 1.5 mm pitch is standard in industrial hydraulics, providing good connection leak tightness and approximately 65% greater strength than the M18x2.5 coarse thread
- Standard in industrial hydraulics — the M18x1.5 thread is widely used in hydraulic connections, valve blocks, and high-pressure industrial fittings
- HSSE steel with 5% cobalt guarantees a hardness of 65-67 HRC and heat resistance up to 650°C, extending cutting edge life under intensive use
- Tolerance 6H according to DIN 374 ensures precise thread production and full interchangeability with hydraulic fittings used in industry
- Material versatility covering structural steels up to 800 MPa, alloy steels, austenitic stainless steels 304/316, and gray and ductile cast iron
- The recommended tap drill diameter of 16.5 mm for the M18x1.5 metric fine thread ensures optimal thread engagement with minimal tool load
The M18x1.5 machine tap is used in industrial hydraulics, pneumatics, valve blocks, and heavy machinery construction requiring leak-tight threaded connections. The M18x1.5 thread offers a balance between the leak tightness of a metric fine thread and assembly speed. Cooling with an oil emulsion at a concentration of 6-8% is recommended to maintain optimal tool life.
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 88-354 | 132-531 |
| MStainless steel | 5-10 | 88-177 | 132-266 |
| KCast iron | 5-15 | 88-265 | 132-398 |
| NAluminum | 10-25 | 177-442 | 266-663 |
Thread preparation M18x1.5 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 16.5 mm
3 Tapping
M18x1.5
✓ 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 M18x1.5 thread is popular in industrial hydraulics due to its good leak tightness, greater strength than a coarse thread, and balance between precision and assembly speed.
The recommended tap drill diameter for the M18x1.5 metric fine thread is 16.5 mm. Precise hole machining ensures full thread engagement.
The M18x1.5 fine thread provides approximately 65% higher tensile strength, better sealing, and greater resistance to self-loosening with a slightly longer assembly time.
Product accessories
HSSE 16.5 cobalt metal drill bit DIN 338
Reference: 13295 In stock < 10 items
€17.63
€21.69 brutto
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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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