Specifications of historical Thread Standards

Precursor of the metric ISO-thread. The metric S.J.-thread was developed in 1898 following an agreement between German, French, Swiss and Belgian engineers in Zurich. The flank angle is 60°.

Screw Diameter
mm
Pitch
mm
Tapping Drill Size
mm
Nut Clearance Diameter
mm
Wrench Size
mm
6.01.004.604.7012
7.01.005.605.7013
8.01.256.256.3815
9.01.257.257.3816
10.01.507.908.0518
11.01.508.909.0519
12.01.759.559.7321
14.02.0011.2011.4023
16.02.0013.2013.4026
18.02.5014.5014.7529
20.02.5016.5016.7532
22.02.5018.5018.7535
24.03.0019.8020.1038
27.03.0022.8023.1042
30.03.5025.1025.4546
33.03.5028.1028.4550
36.04.0030.4030.8054
39.04.0033.4033.8058
42.04.5035.7036.1563
45.04.5038.7039.1567
48.05.0041.0041.5071
52.05.0045.0045.5077
56.05.5048.3048.8582
60.05.5052.3052.8588
64.06.0055.6056.2094
68.06.0059.6060.20100
72.06.5062.9063.55105
76.06.5066.9067.55110
80.07.0070.2070.90116
S. J. Thread