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STI Tap: 1/2"-20 STI
The straight-flute and spiral-flute reamers are generally used by hand while the helical-flute is designed for machine use
Part Number DWRR9
The handle is bent 20 degrees
Part Number: BIT-T/A54892
53/64" HSS Split Point Stub Drill Bit, DWDST Series BoltsandNuts.com STI Tap: 1/2"-20 STIProduct Description Screw machine drills (also know as stub or stubby drills) are manufactured to National Aerospace Standard 907. The 135 degree split point is self centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in a broad range of materials. Screw machine drills are popular in the automotive and construction industries. They are often used in screw machine setup where spindle clearance
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