- Joined
- March 13, 2005
- Messages
- 7,262
- Reaction score
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- City, State
- Martinsburg WV
- Year, Model & Trim Level
- 84 BII "Li'l Samson"
Drill bits to use if you were to tap a 7/16 hole
25/64 inches is equivalent to 9.92 millimetres
for 20 tpi
23/64 inches is equivalent to 9.13 millimetres
14 tpi
If you use a 20 tpi bolt it's extremly close. I would drill a hole with a 25/64 on a scrap piece and see how it works.
I used to have a list of the different bits you could use for a loose fiitting, medium and tight fit.
Or just drill a 10mm hole and test it with a 7/16 tap for the above tpi count. Thinking it could be too lose especially with the 14 tpi. It would thread in but wooble side to side I think.
I would think your more interested in clamping rather then sheer. The more the teeth match the tapped hole the more clamping force you will have via the more surface area of the inclined plane of the threads to each other which will give a much better preload. Hope I make sense.
25/64 inches is equivalent to 9.92 millimetres
for 20 tpi
23/64 inches is equivalent to 9.13 millimetres
14 tpi
If you use a 20 tpi bolt it's extremly close. I would drill a hole with a 25/64 on a scrap piece and see how it works.
I used to have a list of the different bits you could use for a loose fiitting, medium and tight fit.
Or just drill a 10mm hole and test it with a 7/16 tap for the above tpi count. Thinking it could be too lose especially with the 14 tpi. It would thread in but wooble side to side I think.
I would think your more interested in clamping rather then sheer. The more the teeth match the tapped hole the more clamping force you will have via the more surface area of the inclined plane of the threads to each other which will give a much better preload. Hope I make sense.