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Machine Tap M52x3 - for stainless steel HSSE
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  • Machine Tap M52x3 - for stainless steel HSSE
  • Machine Tap M52x3 - for stainless steel HSSE - nr. 1
  • Machine Tap M52x3 - for stainless steel HSSE - nr. 2
FRA

Machine Tap M52x3 DIN 374 C HSSE Fra

FRA FRA
0000011072
€174.79 tax inc.

Net price: €142.11

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W magazynie: 2 pcs.
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Description

Material HSSE
Thread size M52x3
ChamferC (2–3) threads
Standard DIN 374

Technical data for the M52x3 HSSE INOX general-purpose machine tap

Technical Data
Nominal Diameter d1 M52x3
Thread Pitch P 3 mm
Overall Length l1 225 mm
Flute Length l2 50 mm
Shank Diameter d2 40 mm
Square Drive Size a 32 mm
Tap Drill Diameter 49 mm
Chamfer C (2÷3) P
Thread tolerance 6H
M52x3 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 M52x3 tap has a reduced shank to DIN 374: diameter 40 mm, square size 32 mm.

M52x3 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 3 mm/rev, equal to the pitch of the M52x3 thread.

M52x3 INOX machine tap – general-purpose HSSE tool

The Fra HSSE series, designed for manufacturing engineers and CNC operators working with large diameters, includes the M52x3 INOX machine tap with a fine pitch of 3 mm. 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 3 mm thread pitch provides an optimum balance between leak-tightness and ease of assembly. The 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 M52x3 tap for through and blind holes

  • Pitch 3 mm provides an optimum balance between connection load capacity and assembly speed in industrial applications requiring frequent disassembly
  • 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 production of hydraulic housings, valve blocks, and components for high-pressure industrial valves and fittings
  • Durability thanks to HSSE steel with 5% cobalt allows 300-450 threads to be produced in structural steel with proper lubrication using tapping oil
  • Compatibility with ER40 holders and tapping heads for CNC machining centers with synchronous tapping and axial compensation
  • M52x3 general-purpose machine tap with form C directs chips correctly in both through holes and blind holes without the risk of jamming

The Fra M52x3 HSSE machine tap is designed for machining hydraulic power components and industrial fittings. The M52x3 machine tap for through and blind holes is not recommended for hardened steels above 45 HRC. The tap drill diameter is 49 mm.

Cutting data for the M52x3 HSSE INOX general-purpose machine tap

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 31-122 93-366
MStainless steel / INOX 5-10 31-61 93-183
KCast iron 5-15 31-92 93-276
NAluminum 10-25 61-153 183-459

Thread preparation M52x3

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 49 mm

3 Tapping

M52x3

✓ 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 M52x3 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 M52x3 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 M52x3 DIN 374 C HSSE Fra

Machine Tap M52x3 DIN 374 C HSSE Fra

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Courier GLS Przelew24 / Prepayment 14,76 zł gross Delivery time 1 working day
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