Unit:
毫米(mm) |
| ①,If M10 and M12 nuts are required to be supplied according to the widths across flats of 16mm and 18mm specified in ISO 272, the widths across flats (SW) shall be added to the mark ②,Material: a)Steel, Property class: 5 As specified in DIN EN 20898-2 b) Nut of property class 5 shall be made of steel conforming to the chemical composition Cmax 0.5%；Pmax 0.06%；Smax 0.15%。Nuts of these property classes may be manufactured form free-cutting steel manufacturer. In shuc cases, the following maximum sulfur, phosphorus ans lead contents are permissible: sulfur 0.34%; phosphorus 0.11% ; lead 0.35%. As specified in DIN EN 20898-12 |
