... series like M-20 to M 64 & Dia 3/4" to 2", In leangth 50mm to 1500 mm long forging bolts ... , in 4.6, 4.8, 8.8, 9.8, 10.9, 12.9 grade SIZE EQUIVALENT ... STD METRICINCHESIS DIN BS ASTM DIALENGTHDIALENGTHAS PER CUSTOMER DRGM20 To M4870 To 550MM3/4" To 2.0"2" To 59"GRADE ... 4.6,5.6,6.8,8.8,10.9Packing: According to ...