N4 0.250 PRST60 Z100 N4 0.375 PRST60 Z100 N4 0.500 KRSTABB200 N4 0.500 PRST60 Z100 N4 0.625 PRST60 Z100 N4 0.750 PRST60 Z100 n4.000j N4.00X149 N-4/10 N4/N4T