Imperial – 1/2″ Reduced Shank Drill Set HSS
- Bordo Reduced Shank HSS Drills.
- 118° notched point 30° helix.
About Metric Quick Silver M2 HSS Jobber Drills Din338
- 118° Split Point (crankshaft point).
- The split point is self-centering and reduces the need for end thrust.
- Friction at the workpiece is reduced.
- 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips that are wide and thin.
About Drill Bit Surface Treatment
- Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering a thermal process resulting in a porous tool coating.
- This surface aids chip flow and heat dissipation.
- The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.
Contents
DRILL SHANK SIZE | QTY |
---|---|
9/16″ 1/2″ Reduced Shank Drill | 1 |
5/8″ 1/2″ Reduced Shank Drill | 1 |
11/16″ 1/2″ Reduced Shank Drill | 1 |
3/4″ 1/2″ Reduced Shank Drill | 1 |
13/16″ 1/2″ Reduced Shank Drill | 1 |
7/8″ 1/2″ Reduced Shank Drill | 1 |
15/16″ 1/2″ Reduced Shank Drill | 1 |
1″ 1/2″ Reduced Shank Drill | 1 |
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