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Hand Tap M40X1.5 DIN 2181/2 6H HSS
251811
Thread size: M40x1,5172 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
€123.00 tax inc.
Net price: €100.00
Description
Technical data for the M40x1.5 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M40 |
| Thread pitch P mm | 1.5 mm |
| Overall length l1 | 110 mm |
| Flute length l2 | 25 mm |
| Shank diameter d2 | 32 mm |
| Square drive size a | 24 mm |
| Tap drill diameter | 38.5 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 M40x1.5 thread is cut into the wall of a hole with a diameter of 38.5 mm. The thread groove extends 0.75 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 M40x1.5 hole – sequence 1, 2
Hand tapping step by step
Thread M40x1.5 in four steps
ØDrilling
Drill bit 38.5 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 40 mm minus pitch 1.5 mm gives 38.5 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 100 mm, or 2.5 times the thread diameter (2.5 x 40 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 M40x1.5 screw.
M40x1.5 fine-thread hand taps
Hand Tap M40x1.5 DIN 2181/2 6H HSS is designed to cut M40 metric fine threads with a pitch of one and a half millimeters in structural steels and metal alloys with tensile strengths up to eight hundred megapascals. The two-part design — starter (I) and finisher (II) — distributes torque, stabilizes operation, and helps maintain a class six H fit.
Technical data: nominal diameter forty millimeters; pitch one and a half millimeters; sixty° profile according to ISO 68-1; hole tolerance class 6H according to ISO 965; right-hand thread; straight flutes for controlled evacuation. Precision-ground high-speed steel (HSS) ensures edge durability and reduces microchipping. The arrangement complies with DIN 2181/2, while organized operations and repeatable results are supported by M40x1.5 Hand Tap Set. Recommended tap drill diameter: thirty-eight and a half millimeters; using emulsion or active cutting oil improves surface quality and cutting edge life.
- Smooth operation — two working stages reduce torque fluctuations and ensure a uniform thread profile.
- Working life — ground high-speed steel (HSS) slows wear and maintains cutting edge sharpness.
- 6H fit — a controlled pitch diameter enables successful verification with GO / NO-GO gauges.
- Operational consistency — in workshop practice, consistent operations are facilitated by M40x1.5 Hand Tap Set.
Reference standards: DIN 2181/2 (construction), ISO 68-1 (metric profile), and ISO 965 (6H tolerance). Compliance ensures compatibility with inspection instruments, and the resulting threads exhibit repeatability and a stable profile in one-off and small-batch production.
Stages of cutting an M40x1.5 thread with a 2-piece set: roughing tap and finishing tap
Frequently asked questions
Drill to 38.5 mm (diameter 40 mm minus pitch 1.5 mm) to achieve the correct thread engagement in class 6H.
Yes, the set can be used in both through holes and blind holes, in accordance with DIN 2181 and class 6H.
High-speed steel (HSS) provides high durability, abrasion resistance, and stable operation even under demanding conditions.
Product accessories
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Reference: 0423 In stock > 10 items
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Countersink 45/90 DIN 335 C HSS cone countersink
Reference: 0000009863 In stock > 10 items
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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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