#7 in Short lenght drill bits
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Reddit mentions of Forney 21015 Bottom Tap Industrial Pro HSS UNF, 3/8-Inch by 24-Inch

Sentiment score: 0
Reddit mentions: 1

We found 1 Reddit mentions of Forney 21015 Bottom Tap Industrial Pro HSS UNF, 3/8-Inch by 24-Inch. Here are the top ones.

Forney 21015 Bottom Tap Industrial Pro HSS UNF, 3/8-Inch by 24-Inch
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    Features:
  • Unified National Fine (UNF)
  • High speed steel (HSS)
  • Includes 30-degree chamfer angle
  • Approximately 2 pitches chamfered and 1-1/2 tooth height
  • Used when threads need to go to the bottom of hole
Specs:
Height0.375 Inches
Length2.875 Inches
Number of items1
Weight0.05 Pounds
Width0.375 Inches
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Found 1 comment on Forney 21015 Bottom Tap Industrial Pro HSS UNF, 3/8-Inch by 24-Inch:

u/rhekn ยท 2 pointsr/MechanicAdvice

Thats pretty good drilling. Very nice.

I would try 3 things.

Take a small sharp punch and hammer. Gently tap the part of the old bolt and unscrew it.

Continue drilling and rethread the hole using https://www.amazon.com/Vermont-American-21669-16-inch-Drill/dp/B000BQW6F0/ but use the correct size for the stud you have. Seek out a "blind hole" or Bottom chamfer tap if possible. Same thing, different name. Start with the first one, finish with second one. If you notice the cutting part is almost to the end of the second one. That allows you to get to the bottom of the hole.

The last resort is https://www.amazon.com/Helicoil-5546-6-Metric-Coarse-Thread/dp/B0002KKPXK same thing, figure out the size you need first. These are just examples. your actual size is probably different.