This International Standard specifies the general dimensions of solid steel boring bars with cylindrical shank for indexable inserts, and specifies preferred boring bars (see clause 5).
BS 4193-18:1997 history
2013BS ISO 5609-1:2012 Tool holders for internal turning with cylindrical shank for indexable inserts. Designation, styles, dimensions and calculation for corrections
1999BS 4193-18:1999 Hardmetal insert tooling - Specification for dimensions of boring bars for indexable inserts
1997BS 4193-18:1997 Hardmetal insert tooling - Specification for dimensions of boring bars for indexable inserts