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Machine tap M18x1 DIN 374 B HSSE Narex
0000003469
Thread size: M18x161 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
€32.69 tax inc.
Net price: €26.58
Description
Material HSSE
Thread size M18x1
ChamferB (3.5–5.5) threads
Standard DIN 374
Technical data for the M18x1 machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M18x1 |
| Thread Pitch P | 1 mm |
| Overall Length l1 | 110 mm |
| Flute Length l2 | 26 mm |
| Shank Diameter d2 | 14 mm |
| Square Drive Size a | 11 mm |
| Tap Drill Diameter | 17 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 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 mm/rev, equal to the pitch of the M18x1 thread.
M18x1 metric fine thread machine tap – HSSE Narex for hydraulics
The manufacturer Narex offers an M18x1 metric fine thread machine tap made of HSSE high-speed steel with 5% cobalt for industrial hydraulic and pneumatic applications. The M18x1 metric fine thread is standard in medium-pressure hydraulics and pneumatics, providing excellent leak tightness and high threaded joint strength under pressure. As a renowned manufacturer with a long tradition, Narex guarantees the highest manufacturing quality and consistent tool geometry. The tool is intended for professional toolrooms and hydraulic equipment manufacturers.
Why choose the M18x1 Narex machine tap
- The Narex brand as a renowned cutting tool manufacturer with a long tradition, guarantees the highest manufacturing quality, consistent parameters and excellent value for money
- Fine thread with a 1 mm pitch is standard in industrial hydraulics, providing excellent leak tightness and 2.5 times the strength of the M18x2.5 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 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 17 mm for the M18x1 metric fine thread ensures optimal thread engagement with minimal tool load
The M18x1 Narex machine tap is used in industrial hydraulics, pneumatics, valve blocks and wherever leak-tight threaded joints are required in pressurized systems. Form B with straight flutes directs chips forward when tapping through holes. 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 | 88-354 |
| MStainless steel | 5-10 | 88-177 | 88-177 |
| KCast iron | 5-15 | 88-265 | 88-265 |
| NAluminum | 10-25 | 177-442 | 177-442 |
Thread preparation M18x1 in a through hole
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 17 mm
3 Tapping
M18x1
✓ 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 thread is standard in industrial hydraulics because of its excellent leak tightness, high tensile strength and resistance to pressure pulsations due to its larger load-bearing area.
The recommended tap drill diameter for the M18x1 metric fine thread is 17 mm — larger than for the M18x2.5 coarse thread (15.5 mm) due to the finer pitch.
Narex is a reputable manufacturer with a long tradition, offering tools with consistent quality and repeatable geometric specifications. Narex taps offer good value for money.
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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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