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Machine Tapping M14x1.5 - for stainless steel HSSE
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  • Machine Tapping M14x1.5 - for stainless steel HSSE
  • Machine Tapping M14x1.5 - for stainless steel HSSE - nr. 1
  • Machine Tapping M14x1.5 - for stainless steel HSSE - nr. 2
Narex Zdanice spol. s r.o.

Machine tap M14x1.5 DIN 374 C HSSE

Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
0000007349
€19.42 tax inc.

Net price: €15.79

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

Description

Material HSSE
Thread size M14x1.5
ChamferC (2–3) threads
Standard DIN 374

Technical data for the M14x1.5 HSSE INOX general-purpose machine tap

Technical Data
Nominal Diameter d1 M14x1.5
Thread Pitch P 1.5 mm
Overall Length l1 100 mm
Flute Length l2 20 mm
Shank Diameter d2 11 mm
Square Drive Size a 9 mm
Tap Drill Diameter 12.5 mm
Chamfer C (2÷3) P
Thread tolerance 6H
M14x1.5 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 M14x1.5 tap has a reduced shank to DIN 374: diameter 11 mm, square size 9 mm.

M14x1.5 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 1.5 mm/rev, equal to the pitch of the M14x1.5 thread.

M14x1.5 INOX machine tap – for CNC machining

In this range, the manufacturer offers the M14x1.5 INOX machine tap with optimized cutting geometry for metric fine threads with a pitch of 1.5 mm. The tool meets DIN 374 requirements and provides the 6H thread tolerance class required for series production of mechanical and precision components. HSSE steel construction with 5% added cobalt ensures a hardness of 66 HRC and resistance to temperatures up to 650°C in the cutting zone. Form C with straight flutes provides versatile use in through and blind holes in stainless steels.

Advantages of the M14x1.5 INOX tap

  • Compatibility with ER25 holders collets and synchronized tapping chucks for CNC machining centers with automatic tool change
  • Durability increased by the addition of cobalt in HSSE steel extends cutting edge life by 40-60% compared with standard HSS taps
  • Material versatility covering 304 and 316 austenitic stainless steels, structural steels up to 800 MPa, and nonferrous metals such as aluminum
  • Precision to tolerance class 6H meeting the requirements of series production of mechanical and pneumatic components with tight fit tolerances
  • Conforms to DIN 374 for fine threads ensures standardized shank dimensions and interchangeability with tools from European manufacturers
  • M14x1.5 general-purpose machine tap with form C ensures proper chip evacuation in through and blind holes

The M14x1.5 HSSE machine tap is used in toolrooms and prototype shops for one-off and small-batch production of precision components. The M14x1.5 machine tap for through holes and blind holes performs well in the production of automation components. The tap drill diameter for the M14x1.5 thread is 12.5 mm.

Cutting data for the M14x1.5 HSSE INOX general-purpose machine tap

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 114-455 171-682
MStainless steel / INOX 5-10 114-227 171-340
KCast iron 5-15 114-341 171-512
NAluminum 10-25 227-568 340-852

Thread preparation M14x1.5

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 12.5 mm

3 Tapping

M14x1.5

✓ 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

The M14x1.5 HSSE tap with form C and straight flutes is versatile – it is suitable for both through and blind holes. The design ensures proper chip evacuation in both types of holes.

The M14x1.5 HSSE tap cuts internal threads to tolerance class 6H. The 6H designation defines the permissible deviations of the thread pitch and minor diameters – the digit 6 indicates the width of the tolerance zone (medium), while the letter H indicates the position of the zone at the zero line. The 6H tolerance ensures a proper fit with screws of tolerance class 6g.

When tapping stainless steels, an EP emulsion at a minimum concentration of 8% or tapping oil is recommended for cooling. Cooling extends tool life by a factor of 2-3 and improves the thread surface finish.

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Machine tap M14x1.5 DIN 374 C HSSE

Machine tap M14x1.5 DIN 374 C HSSE

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