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The next size larger from a number 6 size screw.
I drill a pilot hole the size of the 'barrel' of the screw. -I always use a combination drill bit for sinking screwheads. The first part of the bit is the diameter of the 'barrel' of the screw and the step, one inch higher is the size of that screw's head. (The barrel is the diameter inside threads) -I have a set of these drill bits for #6, #8, and #10 screws and they are great.
American pocket watches classified as size 8 are 36.4 mm in diameter.
diameter 16
#4 Screw use a 1/16" Drill #6 Screw use a 3/32" Drill #8 Screw use a 1/8" Drill #10 Screw use a 9/64" Drill #12 Screw use a 11/64" Drill #14 Screw use a 3/16" Drill
The inside diameter (ID) is 8 inches. The nominal pipe size (NPS) and outside diameter (OD) depend on the thickness of the walls of the pipe.
Spica has 7-8 times the diameter of our Sun.
5/8" diameter and approximately 24" long.
The radius would be 4 feet I know this because the diameter is always 2x the size of the radius.
The diameter is 8 feet, circumference 25.12, area 50.24
it's a 3/8 Allen key
For a cut tap the correct drill size is a #17 drill, which has a diameter of .173 inches.