A number 40 is 2.489 mm, or almost 1/10 of an inch.
By drill code number, SAE size, metric size.
It's 0.1160 of an inch, or a tiny,tiny bit less than 1/8 inch.
Depends on what the stove fires at.40 btu
Drill bits are not universal. You choose the size of the drill bit according to the size of hole you like to make.
a number of drill is the number that is most dived
For a cut tap the correct drill size is a #17 drill, which has a diameter of .173 inches.
That size is 8-32. The drill bit for a clearance hole is 11/64, or a #17 drill bit.
You are not expressing the size correctly. -There is NO 054. -If you mean 0.054 of an inch, then the nearest drill size is a #54 drill, which is 1.397 mm thick.
Drill bits are sold in increments of 64ths, 32nds, 16ths, 8ths, ect. They are also sold in increments of "numbers" from 1 to ?. 1 being the small size.
Drill bits not only come in fractional number sizes they also come in letter sizes. The F size drill bit is .257 thousandths of an inch in diameter. A 1/4 inch drill bit is .250 thousandths of an inch in diameter, so size F is .007 thousandths of an inch bigger than a 1/4 inch drill bit.
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4 = 40 / 10