2501-4.20, 4.2mm, HSS Long Series Drill

2501-4.20, 4.2mm, HSS Long Series Drill

Description: HSS Long Series Drill

Brand: Bordo

Material: High Speed Steel (HSS)

Diameter D: 4.2mm

Flute Length: 86mm

Overall Length: 146mm

MPN: 2501-4.20

Quantity Per Package: 10 pieces

Feeds per revolution: 0.1mm

Spindle Speed Aluminum / Brass: 4857 RPM

Spindle Speed Cast Iron: 1911 RPM

Spindle Speed Free Cutting Steel: 3424 RPM

Spindle Speed Malleable Iron: 2150 RPM

Spindle Speed Med. Carbon Steel: 2389 RPM

Spindle Speed Stainless Steel: 956 RPM

Spindle Speed Tool Steel: 1433 RPM

Spindle Speed Wood / Plastic: 7246 RPM

SKU: 2501-4.20 Category: Tags: , , Brand:

Description

About this item:
  • 4.2mm HSS Long Series Drill
  • ANSI B94-11
  • 118° chisel point with 30° helix.
  • Chisel point is suitable for general purpose drilling.
  • Black Finish Twist Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
  • This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life.
  • Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.

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