Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-48024 This British Standard supersedes BS

This British Standard supersedes BS 5703-4:1982

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Management and operation

Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-48024 This British Standard supersedes BSWhat is ISO 2540 Type B centre drills about? ISO 2540 specifies the dimensions of centre drills for centre holes with protecting chamfer Type B. ISO 2540 covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drill. The flutes can be straight or spiral at the option of the manufacturer. Unless otherwise stated, these drills are right hand cutting. Who is ISO 2540 Type B centre drills for? ISO 2540 on