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USER GUIDE THREADING
Helix (Lead) angle area by using graph
Helix angle evaluation
10 φ(φL) φ(φL) φ(φL) φ(φL) φ(φL)
9.5
5° 4° 3° 2° 1°
9
Pitch / Lead [mm] 8.5
8 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
7.5 Diameter [mm]
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
Detailed view for small pitch/diameter
φ(φL) φ(φL) φ(φL)
1.5 5° 4° 3°
1.4
1.3
1.2 φ(φL)
1.1 2°
Pitch / Lead [mm] 1
0.9
0.8
0.7
0.6 φ(φL)
0.5 1°
0.4
0.3
0.2
0.1
0
0 1 2 3 4 5 6 7 8 9 10
Diameter [mm]
717
