I use 6mm for 6mm, but if you don't have a metric set, 1/4 inch is only very slightly bigger.
form_title= Drill Bit Sizes form_header= Become a master fixer with drill bit sizes. What will you use the drill bits for?*= _ [50] What size do you need?*= _ [50] What drill brand and model do you own?*= _ [50]
I use a 3/16 drill bit for that.
I would use a 5/8 drill bit which is almost exactly 16mm.
You use a 0.875 bit or a 7/8 bit . They are the same size.
4.5 mm is close enough to 3/16 to use that if you don't have a 4.5 drill bit
If no drill bit this size available, can use EDM service if metal is used
Use 7/64 as tap drill and 9/64 as clearance drill
Your meaning is not clear. - If you are going to tap the threads in, use a 7/32 drill bit. If you want a hole that this bolt will slip through, use a 9/32 drill bit.
Use a 1/4 inch bit, that's only very slightly bigger, less than 0.025 of a mm. larger.
If they are self tapping screws, the drill bit is as thick as the solid barrel of the screw. If you want the screw to go through easily to have a nut on the other side, then the drill bit is slightly larger than thread size.
I use 1/4 drill bit for a 5/16 lag screw in most materials.
A 1/4 inch bit will do it.