BB Micro Drill Solid Carbide Bit Mini CNC Aluminum Hole Making External Cooling 3xD Shank Diameter 4mm D4 BF2055 0.3~3.99mm CNC刀具 they are used for threading

they are used for threading holes in various mechanical components

D10*d5*15*D10*60L

Cutting Force Waveform Diagram

suitable for blind hole machining

If the margin is large

BB Micro Drill Solid Carbide Bit Mini CNC Aluminum Hole Making External Cooling 3xD Shank Diameter 4mm D4 BF2055 0.3~3.99mm CNC刀具 they are used for threadingName: BB Micro Drill Material: Micro grained carbde Number of flutes: 2 Series: BF2055 Diameter of shank: 4mm Application: For general purpose Cuting diameter Shank diameter (D) Cuttlng length (L) Total length (OL) Angle Tolerance 0. 3~0. 4 4 4 50 118 0. 005 0. 41~0. 5 4 5 50 118 0. 005 0. 51~0. 99 4 6 50 118 0. 005 1. 0~1. 5 4 8 50 118 0. 005 1. 51~2. 0 4 10 50 118 0. 005 1. 5 4 12 50 118 0. 005 2. 01~2. 5 4 12 50 118 0. 005 2. 51 4 12 50 118 0. 005