BSI - BS 2593
Specification for Rotary drill rods and tungsten carbide tipped rotary drill bits
|Publication Date:||31 December 1974|
|ICS Code (Drills, countersinks, reamers):||25.100.30|
Dimensions, one-piece bits including pilot and reamer bits and tungsten carbide tips with appropriate hardness grades. Materials and slot for bit, pitch of rod, straightness, and interchangeability requirements.