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Hand Tap M26x1.25 DIN 2181/2 6H HSS Fra
12735
Thread size: M26x1,25172 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
€51.79 tax inc.
Net price: €42.11
Description
Technical data for the M26x1.25 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M26 |
| Thread pitch P mm | 1.25 mm |
| Overall length l1 | 90 mm |
| Flute length l2 | 22 mm |
| Shank diameter d2 | 18 mm |
| Square drive size a | 14.5 mm |
| Tap drill diameter | 24.75 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 M26x1.25 thread is cut into the wall of a hole with a diameter of 24.75 mm. The thread groove extends 0.625 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 M26x1.25 hole – sequence 1, 2
Hand tapping step by step
Thread M26x1.25 in four steps
ØDrilling
Drill bit 24.75 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 26 mm minus pitch 1.25 mm gives 24.75 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 65 mm, or 2.5 times the thread diameter (2.5 x 26 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 M26x1.25 screw.
M26x1.25 fine-thread hand taps
Hand Tap M26x1.25 DIN 2181/2 6H HSS is a precision-made tool designed to cut M26 fine threads in structural steels, stainless steels and nonferrous metals. Its excellent cutting geometry and balanced cutting structure ensure a consistent fit, a clean profile and high surface quality in one-off and short-run machining.
Construction data: nominal diameter twenty-six millimeters; pitch 1.25 millimeters; sixty° profile to ISO 68-1; internal thread tolerance 6H to ISO 965; right-hand cutting. The two-piece version compliant with DIN 2181/2 — starter tap (I) and finishing tap (II) — distributes torque evenly and maintains axial alignment. Precision-ground HSS high-speed steel construction reduces microchipping and provides lasting edge sharpness. Straight flutes ensure predictable chip evacuation, while the recommended drill diameter of 24.8 mm enables a full thread profile.
- Stable profile geometry — the two-piece design minimizes vibration and produces an even thread profile along the entire length.
- Wear resistance — ground HSS high-speed steel maintains edge sharpness, ensuring long tool life.
- Precise 6H fit — maintaining the pitch diameter allows an accurate fit with a class 6g threaded shaft.
- High efficiency — torque control and smooth operation improve result repeatability, which is facilitated by M26x1.25 Hand Tap Set.
Meeting DIN 2181/2 (construction), ISO 68-1 (metric profile) and ISO 965 (6H tolerance) requirements ensures full compatibility with inspection instruments and predictable machining results. In assembly processes and precision applications, dimensional stability, durability and consistent quality are provided by M26x1.25 Hand Tap Set, guaranteeing an excellent fit in every operating cycle.
Stages of cutting an M26x1.25 thread with a 2-piece set: roughing tap and finishing tap
Frequently asked questions
The set consists of two taps — a roughing tap and a finishing tap, which guarantee a fully formed thread when used in sequence.
High-speed steel (HSS) provides high durability, abrasion resistance, and stable operation even under demanding conditions.
The HSS tool works well in low-carbon steel, aluminum, brass, and other materials with good machinability.
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Shipping
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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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