29PC 135 Degree Heavy-Duty Cobalt Screw Machine Drill Set Chicago-Latrobe 559 Straw HSS-CO 1/16-1/2x1/64 MPN:69853

The CHICAGO-LATROBE 69853 Screw Machine Drill Bit Set includes 29 fractional-inch drill bits ranging in size from 1/16 inch to 1/2 inch. Made from Cobalt steel with a straw finish, these split point drill bits feature a screw-machine length and a straight shank. The drill bits have a 2-flute spiral design with right-hand cutting direction.

Key Features:

• - Number of drill bits: 29, covering sizes from 1/16" to 1/2" by 64ths.
• - Drill bit material: Cobalt steel.
• - Point type: split point with 135-degree point angle.
• - Spiral flute type with helix angles ranging from 21° to 34°.
• - Shank type: straight, screw-machine length.
• - Finish: straw.
• - Cutting direction: right hand.
• - Includes a metal drill index case.
• - Coolant feeding: non-coolant through.

Additional Information