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USER GUIDE
Helix (Lead) Angle Area by Using Graph
Helix angle evaluation
φ ( φ L) φ ( φ L) φ ( φ L) φ ( φ L) φ ( φ L) THREADING
5° 4° 3° 2° 1°
10
9.5
9
8.5
8
7.5
7
6.5
Pitch / Lead [mm] 5.5
6
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Diameter [mm]
Detailed view for small pitch/diameter
φ ( φ L) φ ( φ L) φ ( φ L)
5° 4° 3°
1.5
1.4
1.3
1.2 φ ( φ L)
1.1 2°
Pitch / Lead [mm] 0.9
1
0.8
0.7
0.6 φ ( φ L)
1°
0.5
0.4
0.3
0.2
0.1
0
0 1 2 3 4 5 6 7 8 9 10
Diameter [mm]
787
