A handy chart of sizes. It's too much trouble to always look for it!
Common Drill sizes used in MAE156A, easily found in the Design Studio. Note these are NOT lasercamm sizes. Go to the maelabs lasercamm page for those.
Clearance Hole Drills | ||||||||
Size of Screw | Tap Drill | Close Fit | Free Fit | |||||
No. or Dia. | Decimal (inch) | Threads Per Inch | Drill Size | Decimal (inch) | Drill Size | Decimal (inch) | Drill Size | Decimal (inch) |
#0 | 0.06 | 80 | 3/64 | 0.0469 | 52 | 0.0635 | 50 | 0.07 |
#1 | 0.073 | 64 | 53 | 0.0595 | 48 | 0.076 | 46 | 0.081 |
#1 | 0.073 | 72 | 53 | 0.0595 | 48 | 0.076 | 46 | 0.081 |
#2 | 0.086 | 56 | 50 | 0.07 | 43 | 0.089 | 41 | 0.096 |
#2 | 0.086 | 64 | 50 | 0.07 | 43 | 0.089 | 41 | 0.096 |
#3 | 0.099 | 48 | 47 | 0.0785 | 37 | 0.104 | 35 | 0.11 |
#3 | 0.099 | 56 | 45 | 0.082 | 37 | 0.104 | 35 | 0.11 |
#4 | 0.112 | 36 | 44 | 0.086 | 32 | 0.116 | 30 | 0.1285 |
#4 | 0.112 | 40 | 43 | 0.089 | 32 | 0.116 | 30 | 0.1285 |
#4 | 0.112 | 48 | 42 | 0.0935 | 32 | 0.116 | 30 | 0.1285 |
#5 | 0.125 | 40 | 38 | 0.1015 | 30 | 0.1285 | 29 | 0.136 |
#5 | 0.125 | 44 | 37 | 0.104 | 30 | 0.1285 | 29 | 0.136 |
#6 | 0.138 | 32 | 36 | 0.1065 | 27 | 0.144 | 25 | 0.1495 |
#6 | 0.138 | 40 | 33 | 0.113 | 27 | 0.144 | 25 | 0.1495 |
#8 | 0.164 | 32 | 29 | 0.136 | 18 | 0.1695 | 16 | 0.177 |
#8 | 0.164 | 36 | 29 | 0.136 | 18 | 0.1695 | 16 | 0.177 |
#10 | 0.19 | 24 | 25 | 0.1495 | 9 | 0.196 | 7 | 0.201 |
#10 | 0.19 | 32 | 21 | 0.159 | 9 | 0.196 | 7 | 0.201 |
#12 | 0.216 | 24 | 16 | 0.177 | 2 | 0.221 | I | 0.228 |
#12 | 0.216 | 28 | 14 | 0.182 | 2 | 0.221 | I | 0.228 |
#14 | 0.242 | 20 | 10 | 0.1935 | D | 0.246 | F | 0.257 |
#14 | 0.242 | 24 | 7 | 0.201 | D | 0.246 | F | 0.257 |
1/4 | 0.25 | 20 | 7 | 0.201 | F | 0.257 | H | 0.266 |
1/4 | 0.25 | 28 | 3 | 0.213 | F | 0.257 | H | 0.266 |
5/16 | 0.3125 | 18 | F | 0.257 | P | 0.323 | Q | 0.332 |
5/16 | 0.3125 | 24 | I | 0.272 | P | 0.323 | Q | 0.332 |
3/8 | 0.375 | 16 | 5/16 | 0.3125 | W | 0.386 | X | 0.397 |
3/8 | 0.375 | 24 | Q | 0.332 | W | 0.386 | X | 0.397 |
7/16 | 0.4375 | 14 | U | 0.368 | 29/64 | 0.4531 | 15/32 | 0.4687 |
7/16 | 0.4375 | 20 | 25/64 | 0.3906 | 29/64 | 0.4531 | 15/32 | 0.4687 |
1/2 | 0.5 | 13 | 27/64 | 0.4219 | 33/64 | 0.5156 | 17/32 | 0.5312 |
1/2 | 0.5 | 20 | 29/64 | 0.4531 | 33/64 | 0.5156 | 17/32 | 0.5312 |