METRIC THREAD  ELECTRICAL FINE PITCH (EN 60432)

  From M 12 to M 75

Pitch     P Thread Per Inch  TPI = 1/P
Major diameter screw
D    MM     ISO		 Basic thread diameter screw
D   "     UST
Major diameter nut
d    MM     ISO		 Basic thread diameter nut
d  "     UST
Pitch diameter
D2=d2=D-0.64952*P		 Pitch diameter
D2= d2=D-0.64952/TPI 
Minor diameter screw
D1= D-1.227*P		 Minor diameter screw
D1= d1=D-1.227/TPI
Minor diameter nut
d1= D-1.0826*P		 Minor diameter nut
d1=D-1.0826/TPI
Nut thread height
H 1= 0.5413*P		 Nut thread height
H 1= 0.5413/TPI
Screw thread height
H = 0.6135*P		 Screw thread height
H = 0.6135/TPI
 
Metric Electrical Thread
Fine Pitch (EN 60423 )
Nominal Size ISO MF Major Diameter mm d=D Pitch mm p Root Radius mm r Pitch Diameter mm d2=D2 Minor Diameter Screw Thd.     D1 Minor Diameter Nut Thd.         D1 Thread Height Screw Thd. H Thread Height Nut Thd. H1 Tap Drill Diameter mm
12x1.5 12.00 1.50 0.217 11.026 10.160 10.376 0.920 0.812 10.50
16x1.5 16.00 1.50 0.217 15.026 14.160 14.376 0.920 0.812 14.50
20x1.5 20.00 1.50 0.217 19.026 18.160 18.376 0.920 0.812 18.50
25x1.5 25.00 1.50 0.217 24.026 23.160 23.376 0.920 0.812 23.50
32x1.5 32.00 1.50 0.217 31.026 30.160 30.376 0.920 0.812 30.50
40x1.5 40.00 1.50 0.217 39.026 38.160 38.376 0.920 0.812 38.50
50x1.5 50.00 1.50 0.217 49.026 48.160 48.376 0.920 0.812 48.50
63x1.5 63.00 1.50 0.217 62.026 61.160 61.376 0.920 0.812 61.50
75x1.5 75.00 1.50 0.217 74.026 73.160 73.376 0.920 0.812 73.50