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Machine Tap M18x1.25 DIN 374 C HSSE
Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
0000009234
Thread size: M18x1,2575 sizes of this tap
M3x0,35M3,5x0,35M4x0,5M5x0,5M6x0,75M8x0,75M8x1M10x0,5M10x0,75M10x1M10x1,25M11x1M12x1M12x1,25M12x1,5M14x1M14x1,25M14x1,5M15x1M15x1,5M16x0,75M16x1M16x1,5M16x1,75M17x0,75M17x1M18x1M18x1,25M18x1,5M18x2M19x1M20x1M20x1,25M20x1,5M20x2M22x1M22x1,5M22x2M23x1,25M24x1M24x1,5M24x2M25x1M25x1,5M25x2M27x1M27x1,5M27x2M28x1M28x1,5M28x2M30x1M30x1,5M30x2M32x1,5M32x2M33x1,5M33x2M34x1,5M35x1,5M36x1,5M36x2M36x3M38x1,5M39x1M39x1,5M40x1,5M42x2M48x1,5M48x2M48x3M50x1,5M52x1,5M52x3M56x3
€37.22 tax inc.
Net price: €30.26
Instant Shipping
W magazynie: 4 pcs.
Description
Material HSSE
Thread size M18x1.25
ChamferC (2–3) threads
Standard DIN 374
Technical data for the M18x1.25 HSSE INOX general-purpose machine tap
| Technical Data | |
|---|---|
| Nominal Diameter d1 | M18x1.25 |
| Thread Pitch P | 1.25 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 | 16.75 mm |
| Chamfer | C (2÷3) P |
| Thread tolerance | 6H |
Where chips remain in a straight-flute tap
The flute holds the chips until the tap is reversed out
The straight flute runs parallel to the tap axis. There is no helix to carry chips upward. The chamfer cutting edges are not ground at an angle, so they do not push chips downward. Short chips break into fragments and remain in the flute, next to the cutting edges that produced them. They leave the hole only when the tap is backed out. The M18x1.25 tap has a reduced shank to DIN 374: diameter 14 mm, square size 11 mm.
1
Straight flute – chips remain in the flute, next to the cutting edges that produced them.
2
Chamfer C: 2–3 incomplete threads on the tapered lead.
3
The tap rotates clockwise to cut a right-hand thread.
4
Individual fragments exit at the top, onto the workpiece surface.
5
A few fragments fall below the tip and exit through the bottom of the hole.
6
Feed 1.25 mm/rev, equal to the pitch of the M18x1.25 thread.
M18x1.25 INOX machine tap – with a metric fine thread
The HSSE series, designed for manufacturing engineers and CNC operators working with precision connections, includes the M18x1.25 INOX machine tap for metric fine threads. The 6H tolerance in accordance with DIN 374 guarantees the dimensional repeatability required in the production of hydraulic and pneumatic components with stringent sealing requirements. The thread pitch of 1.25 mm provides an optimum balance between connection load capacity and ease of assembly. HSSE steel construction with 5% cobalt ensures a hardness of 66 HRC and long cutting edge life in stainless and difficult-to-machine steels.
Key features of the M18x1.25 INOX tap
- Compliance with DIN 374 for metric fine threads ensures standardized dimensions and full interchangeability with tools from European tool manufacturers
- Designed for hydraulic connections and pneumatic connections requiring excellent sealing and increased resistance to self-loosening under vibration
- Precision of the 6H tolerance required in the production of hydraulic housings, valve blocks, and components for high-pressure industrial valves and fittings
- Durability thanks to HSSE steel with 5% cobalt allows 350-500 threads to be produced in structural steel with proper lubrication using tapping oil
- Compatibility with ER32 holders and tapping heads for CNC machining centers with synchronous tapping and axial compensation
- M18x1.25 general-purpose machine tap with form C directs chips correctly in both through holes and blind holes without the risk of jamming
The M18x1.25 HSSE machine tap is designed for machining structural steels up to 800 MPa, 304 and 316 austenitic stainless steels, and aluminum alloys. The M18x1.25 machine tap for through and blind holes is not recommended for hardened steels above 45 HRC. The tap drill diameter is 16.75 mm.
Cutting data for the M18x1.25 HSSE INOX general-purpose machine tap
| Material | Cutting speed Vc [m/min] | Spindle speed n [rpm] | Feed f [mm/min] |
|---|---|---|---|
| PSteel | 5-20 | 88-354 | 110-442 |
| MStainless steel / INOX | 5-10 | 88-177 | 110-221 |
| KCast iron | 5-15 | 88-265 | 110-331 |
| NAluminum | 10-25 | 177-442 | 221-552 |
Thread preparation M18x1.25
1 Spot drilling
NC spotting drill 90°
2 Drilling
Ø 16.75 mm
3 Tapping
M18x1.25
✓ Done!
Tolerance 6H
Standard: DIN 374 | Chamfer: C (straight) | Application: general-purpose (through and blind 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 M18x1.25 HSSE tap is suitable for austenitic stainless steels 304 and 316, structural steels up to 800 MPa, ductile cast iron, and aluminum and brass alloys. It is not recommended for hardened steels above 45 HRC.
The nominal tap drill diameter for the M18x1.25 thread is 16.75 mm. The hole tolerance range should be 16.65–16.85 mm. A hole at the lower tolerance limit produces a fuller thread profile, while one at the upper limit reduces tapping torque.
The M18x1.25 tap works with ER25 holders and tapping chucks with axial compensation. Synchronized heads with automatic tool change capability are recommended for CNC machines.
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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 M18x1.25 DIN 374 C HSSE Podgląd zdjęć produktu
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