... ,JIS,Non-standard 3.Class:4.8,8.8,10.9 ... alloys steel.3. Class: 4.8,8.8,10.9,12.9.etc4. ... , bolts, non-standard bolt, non-standard nut, non-standard screws, egg neck ... property of Grade 8.8 and 9.8.3. Bolt used ... of Grade 4.8 and 8.8.4. Elevator guide ... mechanical property of Grade 8.8, 10.9 and 12 ... Grade 4.8, 8.8, 10.9 and ... 2, 5 and 8. 7. Various nuts ... can also process non-standard fasteners according to drawing. ...