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Machine Tap M48X2 DIN 374 C HSSE
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  • Machine Tap M48X2 DIN 374 C HSSE
  • Machine Tap M48X2 DIN 374 C HSSE - nr. 1
  • Machine Tap M48X2 DIN 374 C HSSE - nr. 2
Narex Zdanice spol. s r.o.

Machine Tap M48X2 DIN 374 C HSSE

Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
572910
€184.50 tax inc.

Net price: €150.00

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Description

Material HSSE
Thread size M48x2
ChamferC (2–3) threads
Standard DIN 374

Technical data for the M48x2 HSSE INOX general-purpose machine tap

Technical Data
Nominal Diameter d1 M48x2
Thread Pitch P 2 mm
Overall Length l1 190 mm
Flute Length l2 30 mm
Shank Diameter d2 36 mm
Square Drive Size a 29 mm
Tap Drill Diameter 46 mm
Chamfer C (2÷3) P
Thread tolerance 6H
M48x2 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 M48x2 tap has a reduced shank to DIN 374: diameter 36 mm, square size 29 mm.

M48x2 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 2 mm/rev, equal to the pitch of the M48x2 thread.

M48x2 INOX machine tap – for through and blind holes

The M48x2 INOX machine tap is a professional tool for cutting M48 internal threads with a fine pitch of 2 mm in stainless and structural steels. Its HSSE high-speed steel construction with 5% cobalt provides a hardness of 66 HRC and high resistance to cutting zone temperatures up to 650°C. Form C with straight flutes allows tapping of both through holes and blind holes without changing tools. The 6H tolerance in accordance with DIN 374 guarantees dimensional repeatability. The M48x2 general-purpose machine tap is designed for toolrooms and CNC machining center operators.

Key advantages of the M48x2 HSSE general-purpose tap

  • Pitch 2 mm provides an optimum balance between connection load capacity and assembly speed in industrial applications requiring frequent disassembly
  • Durability and heat resistance thanks to HSSE steel with 5% cobalt, which maintains its cutting properties at temperatures up to 650°C in the contact zone
  • Precision to tolerance class 6H guarantees the dimensional accuracy required in the production of hydraulic power components and high-quality industrial valves and fittings
  • Compatibility with ER40 holders and tapping chucks with axial compensation for synchronous tapping on CNC and conventional machines
  • Designed for stainless steels austenitic grades 304 and 316 and ferritic grades, which require tools with increased heat and abrasion resistance
  • M48x2 machine tap for through and blind holes with form C evacuates chips correctly in both hole types without the risk of thread damage

The M48x2 HSSE machine tap is used in the production of industrial fittings and hydraulic power components. Cooling with an EP emulsion at a concentration of at least 8% extends tool life. The tap drill diameter for the M48x2 thread is 46 mm.

Cutting data for the M48x2 HSSE INOX general-purpose machine tap

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 33-133 66-266
MStainless steel / INOX 5-10 33-66 66-132
KCast iron 5-15 33-99 66-198
NAluminum 10-25 66-166 132-332

Thread preparation M48x2

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 46 mm

3 Tapping

M48x2

✓ 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 M48x2 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 M48x2 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 M48X2 DIN 374 C HSSE

Machine Tap M48X2 DIN 374 C HSSE

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