56-Piece, #1 - #56 Cobalt Jobber Drill Set, Number
Part # 03-0257JOBBER DRILL SET M42 TIN - NUMBER
* All prices and specifications subject to change without notice. Actual product appearance & included accessories may differ.
HOW TO USE THIS PRODUCT?
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Iso Material Chart
Primary Workpiece Material
P - Steel
M - Stainless Steel
Secondary Workpiece Material
N - Aluminum
S - High Temp Alloys
K - Cast Iron
Technical specifications
System of Measurement | Inch - ANSI |
Drill Type | Number |
Material | HSSCo8 (M42) |
Coating | TiN |
[NOF] Number of Flutes | 2 |
[SIG°] Point Angle | 135 |
[FHA°] Helix Angle | 30 |
Drill Length Type | Jobber |
Hole Tolerance | h8 |
Cutting Direction | Right |
Through Spindle Coolant | No |
Weight | 1.4 lbs \ 0.6 kg |
Country of Origin | South Korea |
Technical Images

Enlarge Line Drawing & Specs
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Whether you call it a Drill Index, a Drill Set, or a Drill Kit, every machinist is familiar with that box full of drills that should have all the sizes your jobs require. Mark breaks down the mysteries behind the various drill sizing conventions and shows why it's time for an updated drill chart that makes better choices for tap drill sizes and uses all of the drill sizes that are readily available today.



