BS 4175 Standard Dimensions for Tapping screws, slotted countersunk raised head
Technical History and International Equivalents of BS 4175
Equivalent standards:
NF E 25-658
This standard DIN EN ISO 1482 specifies the characteristics of slotted countersunk flat head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.
Dimensional Drawing and Technical Diagrams