Walter

Drillco 400A128 Type B Heavy Duty Jobber Length Drill Bit, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 135 deg Point, HSS, Black Oxide

400A128 MFG #: 400A128
$16.30 / PK
Non-Stock Item
Drillco 400A128 Type B Heavy Duty Jobber Length Drill Bit, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 135 deg Point, HSS, Black Oxide
  • Applicable Materials: Stainless Steel and Tougher Ferrous Metals
  • Country of Origin: US
  • Cutting Depth: 4-1/16 in
  • Cutting Direction: Right Hand
  • Cutting Edge Material: HSS
  • Drill Diameter Measurement System: Imperial
  • Drill Size - Decimal Inch: 0.4375 in
  • Drill Size - Fraction: 7/16 in
  • Finish: Black Oxide
  • Flute Length: 4-1/16 in
  • Flute Type: Spiral
  • Manufacturer Name: Walter Surface Technologies
  • Material: Hss
  • Number of Flutes: 2
  • Overall Length: 5-1/2 in
  • Point Angle: 135 deg
  • Point Type: Split
  • Series: 400
  • Shank Type: Straight
  • Through Coolant (Yes/No): No
  • Type: Type B Heavy Duty
Drillco Jobber Length Drill Bit, Type B Heavy Duty, Series: 400, 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, HSS Cutting Edge, No Through Coolant, HSS, Black Oxide, Applicable Materials: Stainless Steel and Tougher Ferrous Metals,
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  • Application
  • Item Features
  • Standards
For cotter pin hole drilling and cross hole drilling in heads of bolts
  • Web construction is heavier than general purpose construction making these drills suitable for more demanding applications
  • The 135 deg split point reduces the thrust requirements and minimizes walking
  • Steam oxide surface treatment for increased wear resistance and lubricity
NAS 907