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Available only while supplies last. Quantities may be limited.


  • Item # BLDDD4321B12
  • Mfr. Model # DD4321B12
  • UNSPSC # 20111614
  • Shipping Weight 1.0 lbs

Product Details

8% Cobalt numbered screw machine drill. 135 degree split point. Number Size 21

Technical Specs

  • Application Drilling
  • Decimal Equivalent 0.1590
  • Item Drill Bit
  • Grade M42 Cobalt
  • Point Type Split
  • Shank Dia. 0.159"
  • List Number 21
  • Flute Length 1.0625"
  • Drill Bit Grouping Drill Bit
  • Drill Bit Size #21
  • Overall Length 54.00mm
  • Drill Bit Material Cobalt Steel
  • Drill Bit Dimension Type Wire
  • Drill Bit Point Angle 135 Degrees
  • Drill Bit Finish Straw/Bronze

Compliance and Restrictions

  • None

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