DIN 103 Trapezoidal rod Size Tr10 Tr12 Tr14 Tr16 P Thread Pitch 3 3 4 4 Size Tr18 Tr20 Tr22 Tr24 P Thread Pitch 4 4 5 5 Size Tr26 Tr28 Tr30 Tr36 P Thread Pitch 5 5 6 6 Size Tr40 Tr44 Tr50 Tr60 P Thread Pitch 7 7 8 9 All information is strictly informative