Left Hand Black Oxide Machine Drill Bits
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Pittsburg Alleghany Left Hand Screw Machine Length Drills are designed for use in screw machines where the machine spindle rotation is counter clockwise (left hand). They are high speed steel, black oxide treated and 135 Deg split point which helps eliminate drill walking. The short length provides increased rigidity. These General purpose drills can be used in many materials such as cast iron and steel. Sizes under 1/16 & No. 52 are not split point. Drills over 1 inch have reduced shanks.
- Left Hand Screw Machine Length Drills
- High speed steel
- Black oxide treated
- 135 Deg split point
- Drills over 1 inch have reduced shanks