Model NO.: DIN352
Material: High-speed Steel
Standard: Metric
Application For Machine Tool: CNC; Automatic Tapping Machine
Application: Motorized, Manual
Coating: Ticn/Tin/Nocated
Limit: 6h
Overall Length: 45 Mm
Flute Length: 13 Mm
Shank Diameter: 4 Mm
Tang: 3 Mm
Dk: 2.9 Mm
Specification: M3.5
Trademark: HEGONG/OEM
ThreeTap System
Taper Tap: Long chamfer for easy alignment and reduced initial cutting force.
Second Tap: Intermediate cutting to extend thread depth.
Bottoming Tap: Flat end for creating full threads in blind holes.
Material & Treatment
HighSpeed Steel (HSS): Hardness 62-64 HRC, wear-resistant for manual operations.
Oxide Coating: Anticorrosion protection for extended tool life.
Straight Flute Design
Versatility: Ideal for through holes and shallow blind holes with stable cutting force.
Easy Maintenance: Efficient chip evacuation and cleaning during hand tapping.
Tolerance Class
DIN352 Compliance: Achieves 6H tolerance class for precise thread fit.
TYPICAL APPLICATION SCENARIOS
1. Mechanical Repair: On-site threading repair for machinery bases or transmission parts.
2. Low Volume Production: Hand tapping bolts/flanges in carbon steel, alloy steel, or cast iron.
3. Mold Manufacturing: Flexible threading of mold inserts.
| Feature | DIN352 Hand Tap Set | Single Hand Tap |
| Blind Hole | Full threads with bottoming tap | Limited to through holes |
| Cutting Force | Gradual load reduction | High risk of jamming |
| Versatility | Complex & small-batch jobs | Basic through holes only |
| Size | L | Lc | Limit | d | k | dk |
| M2 | 36 | 8 | 6H | 2.8 | 2.1 | 1.6 |
| M2.5 | 40 | 9 | 6H | 2.8 | 2.1 | 2.05 |
| M3 | 40 | 11 | 6H | 3.5 | 2.7 | 2.5 |
| M3.5 | 45 | 13 | 6H | 4 | 3 | 2.9 |
| M4 | 45 | 13 | 6H | 4.5 | 3.4 | 3.7 |
| M4.5 | 80 | 15 | 6H | 4.5 | 3.4 | 5 |
| M5 | 50 | 16 | 6H | 6 | 4.9 | 4.2 |
| M6 | 56 | 19 | 6H | 6 | 4.9 | 5 |
| M7 | 56 | 19 | 6H | 6 | 4.9 | 6 |
| M8 | 63 | 22 | 6H | 6 | 4.9 | 6.75 |
| M9 | 63 | 22 | 6H | 7 | 5.5 | 7.75 |
| M10 | 70 | 24 | 6H | 7 | 5.5 | 8.5 |
| M11 | 70 | 24 | 6H | 8 | 6.2 | 9.5 |
| M12 | 75 | 28 | 6H | 9 | 7 | 10.25 |
| M14 | 80 | 30 | 6H | 11 | 9 | 12 |
| M16 | 80 | 32 | 6H | 12 | 9 | 14 |
| M18 | 95 | 34 | 6H | 14 | 11 | 15.5 |
| M20 | 95 | 34 | 6H | 16 | 12 | 17.5 |
