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Machine Tap M32x1 - Cobalt through-hole
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  • Machine Tap M32x1 - Cobalt through-hole
  • Machine Tap M32x1 - Cobalt through-hole - nr. 2
  • Machine Tap M32x1 - Cobalt through-hole - nr. 3
Narex Zdanice spol. s r.o.

Machine Tap M32x1 DIN 374 B HSSE

Narex Zdanice spol. s r.o. Narex Zdanice spol. s r.o.
018379
€79.30 tax inc.

Net price: €64.47

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Description

Material HSSE
Thread size M32x1
ChamferB (3.5–5.5) threads
Standard DIN 374

Technical data for the M32x1 machine tap

Technical Data
Nominal Diameter d1 M32x1
Thread Pitch P 1 mm
Overall Length l1 150 mm
Flute Length l2 27 mm
Shank Diameter d2 22 mm
Square Drive Size a 18 mm
Tap Drill Diameter 31 mm
Chamfer B (3.5÷5.5) P
Thread tolerance 6H
M32x1 DIN 374 tap – dimensional drawing with lengths and shank dimensions

How the type B through-hole chamfer pushes chips down the hole

Chips exit at the bottom instead of returning through the thread

The form B chamfer for through holes has a chip breaker at the tip of the tap – an angled cut in the cutting edges. The chip breaker directs the chip down the hole, ahead of the tap tip. The chip curls into a coil, breaks into short pieces and exits the hole on the other side of the workpiece. The threads already cut remain clean because the chip does not pass through them on its way up. The M32x1 tap has a reduced shank according to DIN 374: diameter 22 mm, square size 18 mm.

M32x1 DIN 374 tap – diagram of chip movement and rotation direction during tapping
1
Straight flute – chips do not enter it; the flute carries lubricant to the cutting edges.
2
The chip breaker at the tip of the tap directs chips down the hole.
3
The tap rotates clockwise to cut a right-hand thread.
4
B chamfer: 3.5–5.5 incomplete threads on the entry taper.
5
The chips break into segments: individual pieces at the top of the hole, with progressively more farther down. They fall out below the workpiece.
6
Feed 1 mm/rev, equal to the pitch of the M32x1 thread.

M32x1 metric fine thread machine tap – HSSE for precise adjustment

The M32x1 fine thread machine tap is designed for precision tapping of holes in components requiring extremely accurate adjustment. HSSE high-speed steel construction with 5% added cobalt guarantees a hardness of 65-67 HRC and optimal tool life when machining materials with a tensile strength of up to 800 MPa. The M32x1 fine thread with a very small pitch is used in precision mechanisms and industrial optics where axial position microadjustment to fractions of a millimeter is required on a large diameter.

Key advantages of the M32x1 metric fine thread machine tap

  • Fine thread with a 1 mm pitch provides the highest adjustment precision on a large diameter — one revolution produces a displacement of just 1 mm
  • Increased load-bearing area of the thread of the fine thread results in more uniform load distribution and the highest tensile strength
  • HSSE steel with 5% cobalt guarantees a hardness of 65-67 HRC and heat resistance up to 650°C, essential for machining alloy steels
  • Tolerance 6H according to DIN 374 ensures metric fine thread accuracy and full interchangeability with fasteners
  • Resistance to self-loosening thanks to the small pitch and large helix angle, eliminating the need for additional locking measures
  • Recommended tap drill diameter 31 mm for the M32x1 metric fine thread ensures optimal thread engagement

The M32x1 fine thread machine tap is used in industrial optics, large precision mechanisms, and measuring equipment where microadjustment on a large diameter is required. A thread with such a small pitch is preferred in industrial lenses and precision instruments. Cooling with an emulsion containing EP additives at a concentration of 8-10% is recommended.

MaterialCutting speed Vc [m/min]Spindle speed n [rpm]Feed f [mm/min]
PSteel 5-20 50-199 50-199
MStainless steel 5-10 50-99 50-99
KCast iron 5-15 50-149 50-149
NAluminum 10-25 99-249 99-249

Thread preparation M32x1 in a through hole

1 Spot drilling

NC spotting drill 90°

2 Drilling

Ø 31 mm

3 Tapping

M32x1

✓ Done!

Tolerance 6H

Standard: DIN 374 | Chamfer: B (straight) | Application: through 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 M32x1 fine thread provides 3.5 times the adjustment precision, higher tensile strength, excellent resistance to self-loosening, and the ability to microadjust position.

The recommended tap drill diameter for the M32x1 metric fine thread is 31 mm. Hole accuracy is particularly important for threads with such a small pitch.

The M32x1 thread is used in industrial optics, large precision mechanisms, and measuring equipment where position microadjustment on a large diameter is required.

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Machine Tap M32x1 DIN 374 B HSSE

Machine Tap M32x1 DIN 374 B HSSE

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