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Industrial Drill Bits
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Surface Treated, HSS, 12 Inches Aircraft Extension Drill Bit, Size: 9, Dec. Equivalent .1960, Flute Length 2-7/16, Overall Length 12 Inches, Premium Grade Steel , Pack of 12
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
Manufactured to National Aerospace Standard 907
#9 x 12"
#9 x 12" HSS Aircraft Extension Drill Bit, Pack of 12, Drill America, D/AA/CX129
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#9 x 12"
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