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M18x1 Machine Threader - for stainless steel
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  • M18x1 Machine Threader - for stainless steel
  • M18x1 Machine Threader - for stainless steel - nr. 1
  • M18x1 Machine Threader - for stainless steel - nr. 2
Narex Zdanice spol. s r.o.

Machine tap M18x1 DIN 374 C HSSE

Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
0000008248
€31.72 tax inc.

Net price: €25.79

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W magazynie: 3 pcs.
W magazynie: 3 pcs.

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Call and order: (44) 755-04-05

Description

Material HSSE
Thread size M18x1
ChamferC (2–3) threads
Standard DIN 374

Technical data for the M18x1 HSSE INOX general-purpose machine tap

Technical Data
Nominal Diameter d1 M18x1
Thread Pitch P 1 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 17 mm
Chamfer C (2÷3) P
Thread tolerance 6H
M18x1 DIN 374 tap – dimensional drawing with lengths and shank dimensions

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 tap has a reduced shank to DIN 374: diameter 14 mm, square size 11 mm.

M18x1 DIN 374 tap – diagram of chip movement and rotation direction during tapping
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 mm/rev, equal to the pitch of the M18x1 thread.

M18x1 INOX machine tap – compliant with DIN 374

This model from the HSSE series is designed for cutting M18x1 metric fine threads in stainless and structural steels and features a pitch of 1 mm. The M18x1 INOX machine tap features a greater number of threads per unit length, providing higher joint load capacity and better leak tightness. With 5% cobalt, the tool maintains a hardness of 66 HRC even at temperatures up to 650°C in the cutting zone. Form C with straight flutes provides versatile use. The M18x1 HSSE machine tap is intended for manufacturers of hydraulic and pneumatic components.

Key benefits of the M18x1 INOX tap

  • Material versatility covering 304 and 316 austenitic stainless steels, structural steels up to 800 MPa, GGG40 ductile cast iron, and 6000 series aluminum alloys
  • Durability increased by the addition of cobalt in HSSE steel allows 400-600 threads to be cut in structural steel with proper oil emulsion cooling
  • Compatibility with ER32 holders and collets for precise clamping on machining centers with axial compensation and automatic tool changing
  • Precision to tolerance class 6H for demanding fit tolerances in series production of mechanical, hydraulic and pneumatic components
  • Compliance with DIN 374 for fine threads ensures standardized shank dimensions and interchangeability with tools from European manufacturers
  • M18x1 general-purpose machine tap with form C allows tapping of through holes and blind holes without changing the tool or parameters

The M18x1 machine tap for through and blind holes is used in toolrooms and prototype shops for one-off and small-batch production of precision components. Cooling with an EP emulsion at a minimum concentration of 8% or with tapping oil extends tool life by a factor of 2-3. The tap drill diameter for the M18x1 thread is 17 mm.

Cutting data for the M18x1 HSSE INOX general-purpose machine tap

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 88-354 88-354
MStainless steel / INOX 5-10 88-177 88-177
KCast iron 5-15 88-265 88-265
NAluminum 10-25 177-442 177-442

Thread preparation M18x1

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 17 mm

3 Tapping

M18x1

✓ Done!

Tolerance 6H

Standard: DIN 374 | Chamfer: C (straight) | Application: general-purpose (through and blind holes)

Tolerance 6H — metric thread tolerance classes

ClassAccuracyApplicationStatus
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

With proper cooling and lubrication, the M18x1 HSSE tap cuts 400-600 threads in structural steel or 250-350 threads in stainless steel. Dry operation reduces tool life by 40-50%.

Yes, the M18x1 HSSE tap with 5% cobalt is designed for austenitic stainless steels 304 and 316. The addition of cobalt increases heat resistance in the cutting zone to 650°C.

An HSSE tap contains 5% cobalt, which increases hardness from 64 to 66 HRC and heat resistance to 650°C. HSSE is suitable for stainless steels, while HSS is suitable only for structural steels up to 800 MPa.

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Machine tap M18x1 DIN 374 C HSSE

Machine tap M18x1 DIN 374 C HSSE

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
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