Professional MF Hand Tap Sets DIN 2181 | M3-M52 HSS-M2 Straight Flute Taps | Reliable Tool for Fine Pitch Repair
1. Introduction: The Metric Fine (MF) Repair Specialist
Our DIN 2181 Hand Tap Sets are engineered for manual threading of Metric Fine (MF) pitches. Unlike standard coarse threads, fine threads provide higher vibration resistance and finer adjustment capabilities.
This 2-piece set includes a Taper Tap (No. 1) and a Bottoming Tap (No. 2). By distributing the cutting load across two stages, our HSS-M2 taps ensure a clean, precise thread profile with significantly reduced manual effort and a lower risk of tool breakage, even in tough workshop environments.
2. Technical Specifications (MF M3 - M52 Range)
| Size (MF) | Pitch (P) | Standard | Pieces per Set | Overall Length (L1) | Thread Length (L2) | Shank Ø |
| M3 - M5 | 0.35 - 0.50 | DIN 2181 | 2-pc (Set) | 40 - 50 mm | 10 - 16 mm | 2.2 - 6.0 mm |
| M6 - M8 | 0.50 - 1.00 | DIN 2181 | 2-pc (Set) | 50 - 56 mm | 14 - 22 mm | 4.5 - 6.0 mm |
| M10 - M12 | 1.00 - 1.50 | DIN 2181 | 2-pc (Set) | 63 - 70 mm | 20 - 22 mm | 7.0 - 9.0 mm |
| M14 - M18 | 1.00 - 1.50 | DIN 2181 | 2-pc (Set) | 70 - 80 mm | 22 - 25 mm | 11.0 - 14.0 mm |
| M20 - M24 | 1.50 - 2.00 | DIN 2181 | 2-pc (Set) | 80 - 90 mm | 25 - 28 mm | 16.0 - 18.0 mm |
| M27 - M33 | 1.50 - 2.00 | DIN 2181 | 2-pc (Set) | 90 - 110 mm | 28 - 30 mm | 20.0 - 25.0 mm |
| M36 - M45 | 1.50 - 3.00 | DIN 2181 | 2-pc (Set) | 125 - 140 mm | 30 - 40 mm | 28.0 - 36.0 mm |
| M48 - M52 | 1.50 - 4.00 | DIN 2181 | 2-pc (Set) | 160 - 180 mm | 40 - 50 mm | 36.0 - 40.0 mm |
3. Material & Manufacturing Quality
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HSS-M2 (AISI M2) Substrate: Forged from high-speed steel with excellent wear resistance and toughness. This material is the "gold standard" for hand taps, balancing durability with the flexibility needed to prevent snapping under manual torque.
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Bright Finish: The precision-ground bright finish ensures a sharp cutting edge and smooth chip evacuation. It is ideal for a wide range of materials where specialized coatings are not required for manual speeds.
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Fully Ground Threads: Unlike carbon steel taps, our HSS-M2 taps are CNC ground from solid hardened blanks, ensuring a 6H Tolerance Class for a perfect fastener fit.
4. Strategic Industrial Applications
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Automotive Maintenance: Ideal for cleaning or repairing fine-pitch threads on engine mounts, spark plug ports, and suspension components.
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General Engineering: Used in workshops for creating new threads in mild steel, aluminum, brass, and plastics.
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MRO (Maintenance & Repair): The go-to tool for on-site repairs of hydraulic fittings and pneumatic valves where fine pitches are prevalent.
5. Packaging & Global Logistics
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Wholesale Set Packaging: Each 2-piece set is housed in a shockproof Rose-Box plastic case with internal dividers to prevent the taps from clashing.
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Rust-Free Storage: Every set is dipped in a high-viscosity anti-rust oil, guaranteeing a 36-month safe shelf life even in high-humidity shipping containers.
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OEM Customization: Since 1997, we have provided Laser Marking (Your Logo + MF Size + HSS + DIN 2181) for our B2B partners worldwide.
6. Professional FAQ
Q: Why does the DIN 2181 set only have 2 pieces, while DIN 352 has 3?
A: DIN 2181 is for Metric Fine (MF) threads. Because fine threads have a smaller pitch and remove less material per rotation than coarse threads, the tapping process is less strenuous. Therefore, a 2-piece set (Taper & Bottoming) is sufficient for a high-quality finish.
Q: Can I use these taps in a CNC machine?
A: While these are high-quality HSS-M2 taps, they are specifically designed as Hand Taps with a straight flute. For high-speed CNC through-hole applications, we recommend our DIN 374 Spiral Point series.
Q: What is the correct tapping drill size for M12 x 1.5?
A: For Metric Fine threads, use the formula: Nominal Diameter - Pitch. For M12 x 1.5, the correct drill bit is 10.5 mm.
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