Drills and reamers. Specification for the dimensions of countersinks and counterbores.
STANDARD published on 29.7.1983
Designation standards: BS 328-5:1983
Publication date standards: 29.7.1983
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: British technical standard
Category: Technical standards BS
Specifies the dimensions of counterbores with parallel shanks and integral pilots; counterbores with Morse taper shanks and detachable pilots; countersinks with parallel shanks, and countersinks with Morse taper shanks. Appendix A shows extracts from BS 4500:Part 1 giving details of the tolerances specified and Appendix B gives details of counterbores with cutting diameters designated in inches. Status: Under Review