Pilot Capscrew Counterbore High Speed Steel .420Pilot .641Drill 2.52LOC 4OAL

SKU: DR-6032-Pilot-Drill Category:

Description

Counterboring is the enlargement of a portion of a hole that has previously been formed.  If the counterbored portion is 1/8″ or less in depth, the operations is usually known as spot-facing.

  • High Speed Steel M2 Grade
  • For cutting mild steel
  • STEP DRILL -4FLT
  • 0.420 Pilot x 0.641 Drill
  • 2.52 LOC x 4 OAL
  • .500 Shank