Drill America 3/16" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series 3/16" (Pack of 1) 6" Length

Brand:Drill America

3.7/5

24.66

Drill America Cobalt Aircraft Extension Drills 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. Drill America Aircraft Extension Drills are manufactured to National Aerospace Standard 907. The 135° split point is self-centering and reduces thrust. Sizes smaller than 1/16 in. have the 118° standard point. Drill America Aircraft Extension Drills are available in 6 in. and 12 in. overall lengths when extra reach is required.

Amount
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6" overall length for drilling where extra length for reach is required. 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 tool holding systems. 135° split point tip prevents drill from walking. Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium.
Country of Origin China
Cutting Angle String 135 Degrees
Cutting Diameter 0.19 Inches
Finish Type Gold Oxide
Item model number GLBCOX63/16
Manufacturer Drill America
Material Cobalt
Product Dimensions 6 x 4 x 2 inches; 1 Pounds
Shank Type Round

3.7

10 Review
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4 Star
14
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Scritto da: Placeholder
Good bit at a good price.
I needed an extra long drill bit for a project, looked at the local hardware stores and if they even had it in stock they were very pricey, I found this one on Amazon at a much better price and it has worked great, will order from them next time I need a bit.
Scritto da: Bob K.
3/16" x 6" Cobalt Drill Bit
Nice little bit, great price!
Scritto da: Alex
Does the job
The first one I had ordered snagged and immediate broke in half. Fortunately, Amazon took care of the return easily as usual, and I was able to get a replacement. Once I had the new one, it was able to do the job I needed it for (drilling into an aluminum cylinder head). Other than the initial break, there were no issues with the quality of the bit.
Scritto da: bookworm2
Decent drill bit
Other than, because I tend to be heavy-handed and impatient, I break them more often than other people, I have no problem with these; I just buy a few at a time and I'm 'off to see the Wizard'. Rating these at four stars seems fair.
Scritto da: Chris
****
****
Scritto da: Robert Thomson
Good quality
An excellent drill bit and exactly what i needed.
Scritto da: C.F.
Good!
Worked fine for my application. Note, the flutes are relatively short compared to the shaft; so if you need to drill past them you will need to back out frequently to clear the chips.
Scritto da: Ray
Well made, cuts well.
I especially like cobalt drills - they cut into steel much better than the other ones, and are well worth the extra cost.
Scritto da: Manolo Gtz
muy util
muy resistente y era lo que necesitaba para atravesar unos durmientes de ferrocarril
Scritto da: Kiki
As advertised
This drill bit is as advertised.......it does the job it is meant for, at an affordable price.

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