2501-7.00S, 7mm, HSS Long Series Drill – Clam

Description: HSS Long Series Drill – Clam

Brand: Bordo

Material: High Speed Steel (HSS)

Diameter D: 7mm

Flute Length: 98mm

Overall Length: 159mm

MPN: 2501-7.00S

Quantity Per Package: 1 piece

Feeds per revolution: 0.15mm

Spindle Speed Aluminum / Brass: 2776 RPM

Spindle Speed Cast Iron: 1092 RPM

Spindle Speed Free Cutting Steel: 1957 RPM

Spindle Speed Malleable Iron: 1229 RPM

Spindle Speed Med. Carbon Steel: 1365 RPM

Spindle Speed Stainless Steel: 546 RPM

Spindle Speed Tool Steel: 819 RPM

Spindle Speed Wood / Plastic: 4141 RPM

Description

7mm HSS Long Series Drill – Clam
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.