Zenith Aircraft Builders and Flyers
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Source for # 20 drill bits
I need to rivet some solid rivets 470AD-5-7. I plan to order them from Zenith for my 601 upgrade. They used to sell some good drill bits. I need # 20 drill bits, Zenith seems to have removed them from their online catalog. Any suggestions for a source for good # 20 drill bits ?
Replies to This Discussion
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Permalink Reply by John Burns on
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I bought mine from Aircraft Spruce, Aircraft Tool & Supply and McMaster Carr depending on what else I needed at the time. I was usually trying to combine it with other items to save on shipping costs. The 135° point is the only thing that makes these different from other drill bits. Cobalt bits cost more, but last longer.
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Permalink Reply by Perry Delano on
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Hi Pramod,
Numbered drills are commonly available at tool supply places, Acklands,$$$, KMS Canada, McMaster Carr, US
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Permalink Reply by Shaun D on
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I was having issues with my Zenith #20's making triangular holes, I bought a number 20 chucking reamer from Spruce and a 1-60 bit set from amazon. (drill a number 22 then ream it to 20). That gives me really perfect holes.
If you just want numbered bits, the Drill America ones from Amazon have been great.
It also seems like Titanium Nitride cuts better/cleaner than Cobalt, but I could just be crazy.
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Permalink Reply by Carl Orton on
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I bought a bunch from Brown Aircraft Tools in OKC. About 1/2 mi east of I-35. Easy for me to hop off the freeway when heading to KS.
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Permalink Reply by Joe Harrington on
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I often buy drill bits from Pan American Tools. They make/sell good quality stuff.
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Permalink Reply by Collin Campbell on
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Cleveland Aircraft Tool is another great source. Popular with the Van's crowd. Located in Evansville, IN
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