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Machine Threader M6 - for stainless steel HSSE DIN 376
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  • Machine Threader M6 - for stainless steel HSSE DIN 376
  • Machine Threader M6 - for stainless steel HSSE DIN 376 - nr. 1
  • Machine Threader M6 - for stainless steel HSSE DIN 376 - nr. 2
Narex Zdanice spol. s r.o.

Machine Tap M6 DIN 376 C HSSE

Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
12046
€8.74 tax inc.

Net price: €7.11

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

Description

Material HSSE
Thread size M6
ChamferC (2–3) threads
Standard DIN 376

Technical data for the M6 HSSE INOX general-purpose machine tap

Technical Data
Nominal Diameter d1 M6
Thread Pitch P 1 mm
Overall Length l1 80 mm
Flute Length l2 19 mm
Shank Diameter d2 4.5 mm
Square Drive Size a 3.4 mm
Tap Drill Diameter 5 mm
Chamfer C (2÷3) P
Thread tolerance 6H
M6 x1 DIN 376 tap – dimensional drawing showing 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 M6 x1 tap has a reduced shank to DIN 376: diameter 4.5 mm, square size 3.4 mm.

M6 x1 DIN 376 tap – diagram of chip movement and direction of rotation 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 M6 x1 thread.

M6 INOX machine tap – versatile HSSE tool

The HSSE series with a long shank in accordance with DIN 376, designed for manufacturing engineers and CNC operators, includes the M6 INOX machine tap with increased rigidity. The 6H tolerance in accordance with DIN 376 guarantees the dimensional repeatability required in series production of mechanical components with demanding specifications. The long shank eliminates vibration at high spindle speeds on machining centers. Its HSSE steel construction with 5% cobalt guarantees a hardness of 66 HRC and long cutting edge life in stainless and difficult-to-machine steels.

Key features of the M6 tap for through and blind holes

  • Long shank to DIN 376 provides increased clamping rigidity and eliminates vibration at high spindle speeds on CNC machines
  • Designed for stainless steels of austenitic grades 304 and 316, structural steels up to 800 MPa, and aluminum alloys and engineering brass
  • Precision of the 6H tolerance required in the manufacture of mechanical, electronic, and industrial automation components with stringent accuracy requirements
  • Durability thanks to HSSE steel with 5% cobalt allows 400-600 threads to be produced in structural steel with proper lubrication using tapping oil
  • Compatibility with ER16 holders and tapping heads for CNC machining centers with synchronous tapping and axial compensation
  • Universal M6 machine tap with form C directs chips correctly in both through holes and blind holes without the risk of jamming

The M6 HSSE machine tap is designed for series production on CNC machining centers requiring stable operation at high speeds. The M6 machine tap for through and blind holes is not recommended for hardened steels above 45 HRC. The tap drill diameter is 5 mm.

Cutting data for the universal M6 HSSE INOX machine tap

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 265-1061 265-1061
MStainless steel / INOX 5-10 265-531 265-531
KCast iron 5-15 265-796 265-796
NAluminum 10-25 531-1326 531-1326

Thread preparation M6

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 5 mm

3 Tapping

M6

✓ Done!

Tolerance 6H

Standard: DIN 376 | 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 M6 HSSE tap with form C and straight flutes is universal – suitable for both through holes and blind holes. Its design ensures proper chip evacuation in both hole types.

The M6 HSSE tap produces an internal thread to tolerance class 6H. The designation 6H specifies the permissible deviations of the thread pitch and minor diameters – the digit 6 indicates the tolerance zone width (medium), and the letter H indicates the position of the zone at the zero line. Tolerance 6H ensures proper fit with screws to tolerance 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 M6 DIN 376 C HSSE

Machine Tap M6 DIN 376 C HSSE

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