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Hand Tap M39X3 ISO 529/2 6H HSS
1032
Thread size: M39x3172 sizes of this tap
M1x0,2M1,2x0,2M1,4x0,2M1,6x0,2M1,7x0,2M1,8x0,2M2x0,25M2,2x0,25M2,2x0,35M2,3x0,25M2,3x0,35M2,5x0,35M3x0,35M3,5x0,35M4x0,5M4,5x0,5M5x0,5M5,5x0,5M6x0,5M6x0,75M7x0,5M7x0,75M8x0,5M8x0,75M8x1M9x0,5M9x0,75M9x1M10x0,5M10x0,75M10x1M10x1,25M11x0,75M11x1M11x1,25M12x0,5M12x0,75M12x1M12x1,25M12x1,5M13x1M13x1,25M14x0,75M14x1M14x1,25M14x1,5M15x1M15x1,5M16x0,75M16x1M16x1,25M16x1,5M17x1M17x1,5M17x2M18x0,75M18x1M18x1,25M18x1,5M18x2M19x1M19x1,5M20x0,75M20x1M20x1,25M20x1,5M20x2M21x1,5M22x1M22x1,25M22x1,5M22x1,75M22x2M24x1M24x1,5M24x2M25x1M25x1,5M25x2M26x1M26x1,25M26x1,5M26x2M27x1M27x1,5M27x2M28x1M28x1,5M28x2M30x1M30x1,5M30x2M30x2,5M30x3M32x1,5M32x2M32x3M33x1,5M33x2M33x3M34x1,5M34x2M35x1,5M36x1M36x1,5M36x2M36x3M38x1,5M38x2M38x3M39x1M39x1,5M39x2M39x3M40x1,5M40x2M40x3M42x1,5M42x2M42x3M42x4M45x1,5M45x2M45x3M45x4M46x1,5M46x2M48x1,5M48x2M48x3M48x4M50x1,5M50x2M50x3M52x1M52x1,5M52x2M52x3M52x4M55x2M55x3M56x1,5M56x2M56x3M56x4M58x2M58x4M60x1,5M60x2M60x3M62x1,5M62x2M62x3M62x4M64z1,5M64x2M65x2M65x4M68x1,5M68x2M68x3M68x4M70x1,5M70x2M72x1,5M72x4M75x1,5M75x2M76x1,5M80x1,5M85x2M90x2
€119.76 tax inc.
Net price: €97.37
Description
Technical data for the M39x3 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M39 |
| Thread pitch P mm | 3 mm |
| Overall length l1 | 170 mm |
| Flute length l2 | 60 mm |
| Shank diameter d2 | 28 mm |
| Square drive size a | 22.4 mm |
| Tap drill diameter | 36 mm |
| Thread angle G | 60° |
| Tap tolerance | ISO2 6H |
Roughing tap and finishing tap – how much material each removes
Division of work in the 1–2 set
The M39x3 thread is cut into the wall of a hole with a diameter of 36 mm. The thread groove extends 1.5 mm into the wall. A single tap would have to cut the entire groove at once, requiring substantial hand torque and risking breakage. The set divides this work into two passes.
The drawing shows the entire set in operation. Both taps have the same shank and the same length. They differ in their chamfer, the tapered tip: No. 1 has a chamfer spanning 8 threads, while No. 2 spans only 2 threads. The detail windows at the hole wall show how the thread groove deepens after each tap.
| Tap | Chamfer | Chamfer angle | Material removed | How it works in the hole |
|---|---|---|---|---|
| No. 1 – roughing tap | long, 8 threads | 5° | the main portion of the groove | enters smoothly and establishes thread alignment |
| No. 2 – finishing tap | short, 2 threads | 20° | the remainder, to the full profile | follows the cut threads and produces the full 6H profile |
How to distinguish the taps in the set
The chamfer on No. 1 is 4 times as long as the chamfer on No. 2 — the difference is immediately visible when you place them side by side. No. 1 has an incomplete thread profile; only No. 2 has the full profile. The number is also indicated on the shank: No. 1 has one ring, No. 2 has none. Keep the set together and always start with the roughing tap.
How to tap an M39x3 hole – sequence 1, 2
Hand tapping step by step
Thread M39x3 in four steps
ØDrilling
Drill bit 36 mm
1Roughing tap
Chamfer 8 threads
2Finishing tap
Chamfer 2 threads
✓Finished thread
Tolerance 6H
Turning sequence: half a turn clockwise, a quarter turn counterclockwise | Between taps: remove chips from the hole
Start with the hole. The drill diameter is easy to calculate: thread diameter 39 mm minus pitch 3 mm gives 36 mm. An undersized hole is a common cause of a tap twisting off in the workpiece.
Through hole or blind hole – how deep to drill
The set taps both types of holes. In a through hole, the thread extends through the full material thickness. In a blind hole, cut the thread to 97.5 mm, or 2.5 times the thread diameter (2.5 x 39 mm, shown as 2.5D in the drawing). Drill the hole deeper than the thread. The finishing tap has a chamfer spanning 2 threads, so approx. 2 incomplete threads remain near the bottom. The extra depth below the thread accommodates them along with the chips.
No. 1 – the roughing tap establishes thread alignment
Fit the roughing tap in the tap wrench and position it perpendicular to the surface. Check the angle from two sides, for example with a square. Turn half a turn clockwise, then a quarter turn counterclockwise. Reversing breaks the chip into short pieces – a slight crunch is normal. The first threads determine whether the thread will be straight.
No. 2 – the finishing tap produces the full profile
Back out the roughing tap and remove chips from the hole. Screw the finishing tap into the cut threads by hand – it should engage them on its own. Continue turning at the same rhythm as with the roughing tap. The finishing tap removes the remaining material and cuts the groove to the full profile within tolerance 6H. When it screws in smoothly all the way, the thread is complete – check it with an M39x3 screw.
M39x3 fine-thread hand taps
M39X3 Hand Tap ISO 529/2 6H HSS is used to cut an M39 metric fine thread with a pitch of three millimeters in structural steels up to eight hundred megapascals, maintaining a sixty° profile and a class 6H fit according to ISO 965. Even during operation planning, the pass sequence and unambiguous identification of the individual taps are ensured by M39x3 Hand Tap Set, used sequentially.
The nominal diameter is thirty-nine millimeters; right-hand design. Straight flutes guide chips evenly out of the cutting zone. Ground high-speed steel (HSS) maintains low edge microroughness and reduces microchipping during manual operation. The arrangement according to ISO 529/2 comprises two taps — roughing (I) and finishing (II) — which organizes the operation sequence, balances torsional loads, and helps maintain axial alignment. A tap drill diameter of thirty-six millimeters is recommended; using emulsion or active cutting oil improves surface quality and edge life. ISO 68-1 defines the profile, and GO / NO-GO gauges confirm compliance with tolerance zone 6H according to ISO 965.
- Order and repeatability — Hand Tap Set M39x3 simplifies selection, standardizes inspection, and maintains consistency between successive passes.
- Class 6H accuracy — a controlled pitch diameter facilitates assembly of mating parts.
- Smooth cutting process — dividing the operation into roughing and finishing stages reduces torque pulsations and the risk of galling.
- Longer runs between resharpening — ground high-speed steel (HSS) slows abrasion and reduces material adhesion.
Compliance with ISO 529/2, ISO 68-1, and ISO 965 guarantees compatibility with inspection and measuring equipment, while the M39X3 design in class 6H delivers a stable profile and repeatable dimensions in one-off and small-batch work.
Stages of cutting an M39x3 thread with a 2-piece set: roughing tap and finishing tap
Frequently asked questions
Drill to 36 mm (diameter 39 mm minus pitch 3 mm) to achieve the correct thread engagement in class 6H.
Yes, the set can be used in both through holes and blind holes.
High-speed steel (HSS) provides high durability, abrasion resistance, and stable operation even under demanding conditions.
Product accessories
Metal drill bit 36 NWKc HSS DIN 345 Werko
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Countersink 45/90 DIN 335 C HSS cone countersink
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| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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