What size drill bit for a #6 screw?

aarvig · #1 02-02-2011, 09:01 PM

I am dimpling (#6) the trim reinforcement plate on the left elevator of my RV-9A. The plans call to dimple for a #6 screw. What drill size should I use to match drill these holes and can I assume that a #6 screw uses a #6 dimple die?

LifeofReiley · #2 02-02-2011, 10:05 PM

Quote:

Originally Posted by aarvig

I am dimpling (#6) the trim reinforcement plate on the left elevator of my RV-9A. The plans call to dimple for a #6 screw. What drill size should I use to match drill these holes and can I assume that a #6 screw uses a #6 dimple die?

#28 drill bit for a #6

alpinelakespilot2000 · #3 02-02-2011, 10:10 PM

Get a catalog from Cleaveland Tool. They have a great pull out poster with all the rivet, screw, bolt and drill sizes that you can put on your shop wall.

sf3543 · #4 02-03-2011, 01:53 AM

For a 6-32 screw, a #27 or #28 drill will provide close tolerance for the screw to fit through. A #35 or #36 drill is used if you are going to tap threads for a 6-32 screw. Here's a chart example.. http://www.physics.ncsu.edu/pearl/Tap_Drill_Chart.html
There is a special dimple die for a #6 screw that you can get from Avery or Cleaveland, etc. http://www.cleavelandtoolstore.com/p...number=DIE5096 for an example from Cleaveland.

aarvig · #5 02-03-2011, 07:16 AM

Thanks for all the help guys. Steve, I printed off the charts you provided the link to as well as located the chart in the cleaveland tool catalog. They will do the job.
Thanks again!