1 螺栓 M6X15 GB/T5780-2000 4.8 2 螺栓 M6X20 GB/T5780-2000 4.8 3 螺栓 M12X35 GB/T5780-2000 4.8 4 螺栓 M12X45 GB/T5780-2000 4.8 5 螺栓 M12X55 GB/T5780-2000 4.8 6 螺栓 M16X30 GB/T5780-2000 4.8 7 螺栓 M16X35 GB/T5780-2000 4.8 8 螺栓 M16X160 GB/T5780-2000 4.8 9 螺栓 M16X50 GB/T5780-2000 4.8 10 螺栓 M16X60 GB/T5780-2000 4.8 11 螺栓 M16X70 GB/T5780-2000 4.8 12