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Hand Tap M45X3 ISO 529/2 6H HSS
4997
Thread size: M45x3172 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
€161.84 tax inc.
Net price: €131.58
Description
Technical data for the M45x3 hand tap
| Technical data | |
|---|---|
| Nominal diameter d1 mm | M45 |
| Thread pitch P mm | 3 mm |
| Overall length l1 | 183 mm |
| Flute length l2 | 67 mm |
| Shank diameter d2 | 31.5 mm |
| Square drive size a | 24.6 mm |
| Tap drill diameter | 42 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 M45x3 thread is cut into the wall of a hole with a diameter of 42 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 M45x3 hole – sequence 1, 2
Hand tapping step by step
Thread M45x3 in four steps
ØDrilling
Drill bit 42 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 45 mm minus pitch 3 mm gives 42 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 112.5 mm, or 2.5 times the thread diameter (2.5 x 45 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 M45x3 screw.
M45x3 fine-thread hand taps
M45X3 Hand Tap ISO 529/2 6H HSS is designed to cut internal metric threads M45 with a pitch of three millimeters in structural steels up to eight hundred megapascals. As early as operation planning, a two-tap sequence according to ISO 529/2 ensures an orderly pass sequence and unambiguous stage identification.
Working specifications: nominal diameter forty-five millimeters; pitch three millimeters; sixty° profile according to ISO 68-1; internal thread tolerance class 6H according to ISO 965; right-hand construction; straight flutes ensure consistent chip evacuation. Ground high-speed steel (HSS) stabilizes the edge and limits microchipping. Operation in the ISO 529/2 configuration — starter (I) and finisher (II) — balances torsional loads and supports axial alignment, while M45x3 Hand Tap Set with clearly marked taps organizes selection as early as workstation setup. Recommended tap drill size: forty-two millimeters; cooling with emulsion or active cutting oil improves surface finish.
- Smooth profile generation — stage I prepares the geometry, and stage II completes the profile, limiting torque pulsations and galling.
- Long edge life — ground HSS maintains low microroughness and slows abrasion during manual operation.
- Class 6H accuracy — a controlled pitch diameter helps achieve a successful GO / NO-GO test result.
- Operation repeatability — at the workstation M45x3 Hand Tap Set organizes the sequence of operations and standardizes inspection.
Compliance with ISO 529/2 (construction), ISO 68-1 (profile geometry), and ISO 965 (class 6H tolerances) guarantees compatibility with inspection instruments; the M45x3 design delivers a stable thread profile and consistent dimensions in one-off and small-batch machining.
Stages of cutting an M45x3 thread with a 2-piece set: roughing tap and finishing tap
Frequently asked questions
Drill to 42 mm (diameter 45 mm minus pitch 3 mm) to achieve the correct thread engagement in class 6H.
The HSS tool works well in low-carbon steel, aluminum, brass, and other materials with good machinability.
High-speed steel (HSS) provides high durability, abrasion resistance, and stable operation even under demanding conditions.
Product accessories
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| 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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