Foredom Cobalt Steel Step Drills, 17 head sizes from .5mm to 2.3mm

Foredom Cobalt Steel Step Drills, 17 head sizes from .5mm to 2.3mm

A-8005
  • $ 8.40


Use Product Options Menu Above to Select Head Diameter:

A-8005: 0.5mm
A-8006:
0.6mm
A-8007:
0.7mm
A-8008:
0.8mm
A-8009:
0.9mm
A-8010:
1.0mm
A-8011:
1.1mm
A-8012:
1.2mm
A-8014:
1.4mm
A-8015:
1.5mm
A-8016:
1.6mm
A-8017:
1.7mm
A-8018:
1.8mm
A-8020:
2.0mm
A-8021:
2.1mm
A-8022:
2.2mm
A-8023: 2.3mm

Drills are solid cobalt steel and outlast high speed steel (HSS) bits 15 to 1.

Speed Recommendations:
Drilling speeds should be between 500 and 10,000 rpm. All drilling should be done with a lubricant. The harder the material (metal) to be drilled and the larger the hole size, the slower the drill speed.

Material 1mm (1/16) Drill 2.35mm (3/32) Drill
Aluminum 7,000-8,000 5,000-6,000
Mild Steel 3,000-3500 2,000-3,000
Stainless Steel 1,000-2,000 500-1,000
Brass, Silver, Copper 5,500-6,500 4,000-5,000


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