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Drillco 500A128 Type J Heavy Duty Jobber Length Drill Bit, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 135 deg Point, Cobalt, Oxide Treated

Manufacturer: Walter Surface Technologies
Drillco Jobber Length Drill Bit, Type J Heavy Duty, Series: 500, Imperial, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 5-1/2 in Overall Length, 4-1/16 in Cutting Depth, 2 Flutes, Spiral Flute, 4-1/16 in Flute Length, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, Cobalt Cutting Edge, No Through Coolant, Cobalt, Oxide Treated, Applicable Materials: Stainless Steel, Titanium, High Temperature and High Strength Alloys
SKU: DRI 500A128
Manufacturer part number: 500A128
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The high red hardness of Drillco's M42 cobalt drills permit speeds 30% greater than HSS drills. Heavy duty construction made to Type J aircraft specs. For drilling holes in hard, tough materials such as stainless steel, titanium, and high strength alloys.
  • Made with premium grade cobalt HSS to drill harder materials
  • Cobalt drills can drill approximately 30% faster than HSS drills
  • Self centering 135 split-point for reduced thrust requirements and minimized walking
  • Bronze surface treatment for high lubricity
  • Jobber length for most use cases
Products specifications
Cutting Depth 4-1/16 in
Cutting Direction Right Hand
Cutting Edge Material Cobalt
Drill Diameter Measurement System Imperial
Drill Size - Decimal Inch 0.4375 in
Drill Size - Fraction 7/16 in
Flute Length 4-1/16 in
Flute Type Spiral
Number of Flutes 2
Overall Length 5-1/2 in
Point Angle 135 deg
Series 500
Shank Type Straight
Through Coolant (Yes/No) No
Type Type J Heavy Duty
Point Type Split
Material Cobalt
Finish Bronze
Applicable Materials Stainless Steel, Titanium, High Temperature and High Strength Alloys