... -standard nut, non-standard screws, egg neck bolt, fish bolt, countersunk head bolt., expansion bolt and expansion screw, etc.Shanghai Jinrui Norm Parts ... 60MM-1400MM.2. Metric and ANSI round head oval neck bolt (fish bolt) with mechanical property of Grade 8.8 and 9 ... and 8.8.4. Elevator guide rail bolt and big hexagon bolt for steel structure, shearing bolt with mechanical property of Grade 8.8 ...