Viking 135° Ultra Bor Super Premium H.S.S. Heavy Duty Jobbers Drills - Number Sizes #26 to #60
Brand: Viking Drill & Tool- ID:
- 690053
Viking 135° Ultra Bor Super Premium H.S.S. Heavy Duty Jobbers Drills - Number Sizes #26 to #60
- H.S.S. - High Speed Steel
- Designed for series 300 stainless steel, except for 303
- 2 Flutes
- Industry Standard: 240-UB
- Much tougher than cobalt steel.
- Hardness: 58 to 60 RC
- Thin web design penetrates work hardening stainless steel fast enough to continually cut beneath the chip which is hardening from deformation.
- 135° split point design stops drill walking, holds tighter hole size and takes a smaller chip resulting in less heat.
- Low temperature stress relief improves lubricity and toughness.
- Flute Shape: Standard Spiral, Helical Flute
- Cutting Direction: Right Hand
- Helix Angle: 30°
- Ultra Bor Super Premium drills are made of special Hi-moly tool steel, which is much tougher than cobalt steel.
- Heavy-duty Jobbers length twist drills.
- Premium grade high-speed steel construction.
- Lower helix angle of 30° wraps slowly and is used in drilling hard materials.
- Two-flutes design with straight body shank.
- Manufactured to NAS 907B specification.
- Nitro-Carburized flute has an increased rockwell hardness.
- Rich amber color.
- 135° split point geometry (over 1.5mm).
- Workpiece Material Range: Steel, Non-Ferrous, Cast Iron, Plastics
- Country of Origin: U.S.A.
For more info, visit www.p65warnings.ca.gov.
