DIN376 Straight Flute Tap
Metric Thread Compliance:
Designed for DIN 376 standard metric threads (e.g., M8×1, M10×1.25), ensuring high-precision thread profiles.
Straight Flute Design:
Chip Evacuation: Optimized for both through holes and blind holes threading in continuous machining operations.
Rigidity: Superior stability compared to spiral taps, ideal for hard materials.
Material & Coating:
HSS-E (High-Speed Steel with Cobalt): Hardness up to 63-65 HRC, enhanced wear resistance for long tool life.
Optional TiN/TiCN Coating: Reduces friction and extends durability in high-temperature applications.
High-Speed Machining:
Suitable for CNC machines and automatic lathes at speeds up to 15 m/min.
Thread Quality:
Ground Thread Profile: Achieves 6H tolerance class for critical applications.
TYPICAL APPLICATION SCENARIOS
Precision Engineering:
Threading hydraulic valve blocks, precision gears, and bearing housings in alloy steel (e.g., 42CrMo).
Automotive Manufacturing:
Tapping engine cylinder head bolts (threads for high clamping force) and transmission shafts.
Heavy Machinery:
Producing high-strength fasteners and flange connections in carbon steel (e.g., S45C).
Aerospace Components:
Threading landing gear parts and actuator systems requiring DIN standard threads.
General Metalworking:
High-volume production of metric threaded components in workshops with automated equipment.
Size |
L |
Lc |
Limit |
d |
k |
Flute |
M3 |
56 |
9 |
6H |
2.2 |
- |
2.5 |
M3.5 |
56 |
11 |
6H |
2.5 |
2.1 |
2.9 |
M4 |
63 |
12 |
6H |
2.8 |
2.1 |
3.3 |
M4.5 |
70 |
13 |
6H |
3.5 |
2.7 |
3.7 |
M5 |
70 |
13 |
6H |
3.5 |
2.7 |
4.2 |
M6 |
80 |
15 |
6H |
4.5 |
3.4 |
5 |
M7 |
80 |
15 |
6H |
5.5 |
4.3 |
6 |
M8 |
90 |
18 |
6H |
6 |
4.9 |
6.8 |
M9 |
90 |
18 |
6H |
7 |
5.5 |
7.8 |
M10 |
100 |
20 |
6H |
7 |
5.5 |
8.5 |
M11 |
100 |
20 |
6H |
8 |
6.2 |
9.5 |
M12 |
110 |
23 |
6H |
9 |
7 |
10.2 |
M14 |
110 |
25 |
6H |
11 |
9 |
12 |
M16 |
110 |
25 |
6H |
12 |
9 |
14 |
M18 |
125 |
30 |
6H |
14 |
11 |
15.5 |
M20 |
140 |
30 |
6H |
16 |
12 |
17.5 |
M22 |
140 |
30 |
6H |
18 |
14.5 |
19.5 |
M24 |
160 |
36 |
6H |
18 |
14.5 |
21 |



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