IS 4340 : 1967 Needle bar links for sewing machines for household purposes

1 Scope

1.1 This standard specifies the requirements for two types of needle bar links for sewing machines for household purposes.

1.1.1 This standard does not deal with needle bar links used inindustrial and special purpose sewing machines.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 210 :1962Specification for grey iron castings

IS 1501 :1959Method for Vickers hardness test for steel

IS 1570 :1961Schedules for wrought steels for generalengineering purposes

IS 1789 :1961Method for Brinell hardness test for grey cast iron

IS 2500 : Part I :1963 Sampling inspection tables: Part IInspection byattributes and by count of defects

IS 3073 :1967Assessment of surface roughness