1. Home
  2. Shop All Products
  3. Drilling & Holemaking
  4. Countersinks, Chamfer Mills & Back Chamfers
  5. Countersinks & Sets
  6. Countersinks
  7. 5/16" 120º 6-Flute H.S.S. Countersink

5/16" 120º 6-Flute H.S.S. Countersink

121324
Brand: STM
List Price $ 16.94
AvailabilityCall for Availability
• Brand: STM
• End Type : Single
• Shank Type : Straight
• Cutting Direction : Right Hand
• Model Number : HS6-5/16-120
• Download catalog page
  • Description

• Head Diameter (Inch): 5/16"
• Number of Flutes: 6
• Included Angle: 120
• Countersink Material: High Speed Steel
• Countersink Finish/Coating: Black Oxide
• Shank Diameter (Inch): 1/4"
• Flutes are staggered to ensure smoother, chatter-free cutting action
• Steam black oxide surface treatment enhances tool life and prevents galling
• 100% CNC manufactured to tighter than industry standard tolerances