This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.
Status : PublishedPublication date : 1974-08
Edition : 1Number of pages : 6
Buy this standard
A standard is reviewed every 5 years
Revisions / Corrigenda