Precision Twist Drill 12″ Long H.S.S. Aircraft Extension Drill, Z Size, 3-7/8″ Flute Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Series: 502-12
• Drill Point Angle: 135 Split Point
• Overall Length: 12″
• Access hard-to-reach holes
• For drilling normal steels, cast iron, and a variety of other ferrous and non-ferrous metals and alloys.
  Used with hand held manual drills and either portable or stationary machines.
• Right hand (clockwise rotation) cutting direction.
• Standard 2 flute design, normal spiral – helical flutes.
• Straight shanks correspond to the drill diameter.
• Manufactured from high speed steel to NAS 907 Type B specifications.
• Black finish.
• Flute Shape: Normal Spiral – Helical
• Shank Style: Straight Shank
• Package Qty: 3
• Workpiece Material Range: Steel, Non-Ferrous, Cast Iron, Plastics

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