Drill America #55 Cobalt Heavy Duty Stub Drill Bit (Pack of 12), D/ASTCO Series
Amazon Price as of 01/18/2025 07:27 GMT+00:00
-16%
$13.78
$16.50
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average price $16.45
$2.67 cheaper than average
$14.53
$16.02
Product Description
Drill America D/ASTCO series cobalt steel screw machine length drill bit. Manufactured to National Aerospace Standard 907. 135 degrees split point is self-centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in high tensile strength materials like PH stainless steel, inconel, and titanium.
• Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
• Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
• Round shanks allow use with a wide variety of toolholding systems
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• Ideal for portable or machine drilling
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