Plate thread / thread-pitch - Screw rod thread / thread-pitch
2" (30 - 50 mm) - 3/8" - 16 mm 3/8" - 24 mm
3" (50 - 75 mm) - 3/8" - 16 mm 1/2" - 20 mm
4" (75 - 105 mm) - 1/2" - 16 mm 5/8" - 18 mm
6" (100 - 150 mm) - 5/8" - 11 mm 3/4" - 16 mm