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Description
Tap and die set from M3 to M12
M3–M12 tap and die set provides complete equipment for professional toolrooms and machine shops. It ensures dimensional repeatability and maintains internal and external thread tolerances in accordance with ISO standards.
The set includes
| ▸ | M3–M12 hand taps — 3-piece HSS sets with 6H tolerance (roughing + intermediate + finishing) |
| ▸ | M3–M12 round dies — HSS steel, size 25×9 mm, DIN 223 / ISO 22568 standard |
| ▸ | Tap wrench — adjustable No. 1.1/2, range M1–M12 |
| ▸ | Die stock — for 25×9 mm dies |
| ▸ | Thread pitch gauge — 14-leaf, for internal and external threads |
| ▸ | Screwdriver — for adjusting the die stock |
Total in the set
32 pieces
DIN 352 HSS hand taps
M3-M12 hand taps in this set are tools designed for precise cutting of internal threads in holes. Each size includes a set of three taps — a taper tap (No. 1), a plug tap (No. 2), and a bottoming tap (No. 3) — allowing the thread to be formed progressively without the risk of damaging the material. High-speed steel (HSS) with a hardness of 64 HRC ensures durable cutting edges and allows machining of structural steels up to 800 MPa. The 6H tolerance in accordance with DIN 352 ensures dimensional repeatability and proper screw fit. The three-stage tapping system distributes cutting forces, protecting the tool from breakage and producing a smooth thread surface. The square shank is compatible with the No. 1.1/2 tap wrench included in the set, while the straight flutes facilitate chip evacuation during manual operation. The taps in this set are suitable for machine shops, maintenance departments, and machine repairs. The taper tap performs approximately 55% of the cutting work, the plug tap 30%, and the bottoming tap cuts the thread to its full profile. This design minimizes the risk of tool jamming and extends tool life.
| Thread | Pitch P [mm] | Overall length l₁ [mm] | Flute length l₂ [mm] | Shank ∅ d₂ [mm] | Square a [mm] | Hole ∅ [mm] |
|---|---|---|---|---|---|---|
| M3 | 0.50 | 40.0 | 11.0 | 3.5 | 2.70 | 2.5 |
| M4 | 0.70 | 45.0 | 13.0 | 4.5 | 3.40 | 3.3 |
| M5 | 0.80 | 52.0 | 16.0 | 6.0 | 4.90 | 4.2 |
| M6 | 1.00 | 56.0 | 18.0 | 6.0 | 4.90 | 5.0 |
| M8 | 1.25 | 63.0 | 20.0 | 6.0 | 4.90 | 6.8 |
| M10 | 1.50 | 70.0 | 22.0 | 7.0 | 5.50 | 8.5 |
| M12 | 1.75 | 80.0 | 24.0 | 9.0 | 7.00 | 10.2 |
| 3-piece set: roughing (No. 1) + intermediate (No. 2) + finishing (No. 3) | 7 sets | |||||
Thread tolerance: 6H (ISO) | Material: HSS (high-speed steel) | Standard: DIN 352
DIN 223 HSS metric dies
M3-M12 round dies add the capability to cut external threads on rods and shafts. Made of high-speed steel (HSS), they ensure precise thread formation in accordance with DIN 223 / ISO 22568. All dies have the same 25×9 mm size and fit the single die stock included in the set. The adjustment slit allows minor thread diameter correction using the die stock screw. HSS steel is wear-resistant and intended for machining steel, aluminum, brass, and cast iron. The flutes allow unobstructed chip evacuation and coolant access to the cutting zone, while the tapered lead-in makes starting easier and eliminates stripping of the first thread turns.
| Thread | Pitch P [mm] | Die ∅ d2 [mm] | Thickness h1 [mm] | Shaft ∅ [mm] |
|---|---|---|---|---|
| M3 | 0.50 | 25 | 9 | 2.9 |
| M4 | 0.70 | 25 | 9 | 3.9 |
| M5 | 0.80 | 25 | 9 | 4.9 |
| M6 | 1.00 | 25 | 9 | 5.9 |
| M8 | 1.25 | 25 | 9 | 7.9 |
| M10 | 1.50 | 25 | 9 | 9.9 |
| M12 | 1.75 | 25 | 9 | 11.9 |
| All dies in the set: ∅25 × 9 mm | 7 pcs | |||
Material: HSS (high-speed steel) | Standard: DIN 223 / ISO 22568 | Die stock: 25×9 mm
14-leaf thread pitch gauge
Thread pitch gauge enables quick identification of metric thread pitch (in mm) and Whitworth 55° inch thread pitch (in TPI — threads per inch). Essential for selecting the correct tap or die to match an existing thread.
| Metric thread pitches | |
|---|---|
| 0.50 mm | 0.90 mm |
| 0.60 mm | 1.00 mm |
| 0.70 mm | 1.25 mm |
| 0.75 mm | 1.50 mm |
| 0.80 mm | 1.75 mm |
| 55° inch threads (Whitworth) | |
| 28 TPI | 27 TPI |
| 12 leaves | |
Frequently asked questions
Drill a hole according to the chart, for example, 6.8 mm for M8. Insert the taper tap (No. 1) into the tap wrench and align it perpendicular to the surface. Turn half a turn forward, then a quarter turn back — this breaks the chips. Repeat with the plug tap (No. 2) and bottoming tap (No. 3). Use tapping lubricant throughout the operation.
Select a rod smaller than the nominal diameter, for example, 7.9 mm for M8. Chamfering the edge of the rod at 45° over 1-2 mm makes starting easier. Insert the die into the die stock with the marked side facing the material. Turn evenly with both hands — half a turn forward, then a quarter turn back. Apply tapping oil generously.
Place each gauge leaf against the surface of the external or internal thread. The correct leaf fits perfectly into the grooves without any gaps. Read the pitch value stamped on the leaf — millimeters for metric threads, TPI for inch threads. The included 12-leaf gauge covers pitches of 0.5-1.75 mm.
External thread (screw, rod): Place the caliper jaws around the widest point of the thread and record the measurement, for example, 8 mm. Then try the gauge leaves against the grooves — when you find a perfect match, read the pitch, for example, 1.25 mm. Result: M8×1.25.
Internal thread (hole, nut): Open the inside jaws of a caliper against the hole walls and record the measurement. Add 1-1.5 mm to obtain the nominal diameter. Check the pitch by inserting a gauge leaf into the hole. Example: a 6.8 mm hole + a 1.25 mm pitch indicates an M8×1.25 thread.
Product accessories
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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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