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

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

SKU: A-8005 - A-8006 - A-8007 - A-8008 - A-8009 - A-8012 - A-8014 - A-8015 - A-8016 - A-8017 - A-8018 - A-8020 - A-8021 - A-8022 - A-8023.

$8.74

Primo® Cobalt Steel Step Drills with 10mm head lengths and 16 different head diameters See Product Options for sizes. See chart for Gauge – Inch – Metric equivalents.

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Use Product Options Menu Above to Select Head Diameter:

A-8005  –  .5 mm, A-8006  –  .6 mm, A-8007  –  .7 mm, A-8008  –  .8 mm, A-8009  –  .9 mm,  A-8012 – 1.2 mm, A-8014 – 1.4 mm, A-8015 – 1.5 mm, A-8016 – 1.6 mm, A-8017 – 1.7 mm, A-8018 – 1.8 mm, A-8021 –  2.1 mm, A-8022 – 2.2 mm, A-8023 – 2.3 mm .

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

Weight 0.1 lbs
Dimensions 7 × 5 × 1 in
SKU - Head Diameter mm

A-8005 – .5 mm, A-8006 – .6 mm, A-8007 – .7 mm, A-8008 – .8 mm, A-8009 – .9 mm, A-8010 – 1. 0 mm, A-8011 – 1. 1 mm, A-8012 – 1.2 mm, A-8014 – 1.4 mm, A-8015 – 1.5 mm, A-8016 – 1.6 mm, A-8017 – 1.7 mm, A-8018 – 1.8 mm, A-8020 – 2.0 mm, A-8021 – 2.1 mm, A-8022 – 2.2 mm, A-8023 – 2.3 mm

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