How To Choose Drill Bits Construction How For a 5 32 inch screw, you should choose a 11 64 inch tapered bit. before drilling, measure the screw size to find the correct drill bit size. the size of the drill bit should be slightly smaller than the diameter of the screw, including the threads. make sure you purchase a bit with a brad point for accuracy and safety. The spruce kelsey hansen. best for: drilling rivets into thin sheets of metal. another type of specialty drill bit, rivet drill bits are specifically made to drill rivet holes into thin sheets of metal. rivets are mechanical fasteners with a head on one end and a cylindrical stem known as a tail on the other end.
Drill Bit Guide Best Types Chart Hand Tool Essentials Bit size reflects the diameter of the body. some projects call for specific drill bit sizes, but a bit set that includes sizes from 1 16 inch to 1 4 inch will work for many jobs around the home and workshop. you can add larger bits — 5 16 inch, 3 8 inch, 7 16 inch and 1 2 inch bits — if you need them. Twist bits are generally the starting point when drilling a hole. many drill bits, such as brad bits or masonry bits, are variations on the basic twist bit structure. but there’s a limit on the size of twist bits, beyond which the weight and heat become impractical. in general, twist bits work well for holes up to one inch in diameter. Larger diameter drill bits have a smaller shank (either 1 4”, 3 8” or 1 2”) so they can fit into a standard, regular joe sized drill chuck. some drill bits have 3 flats on the shank to keep them from slipping all over the place under high torque loads. still, others have 1 4” hex shanks for use in a portable drill with a hex drill bit. Wipe the drill and drill bit with a clean, dry towel or cleaning cloth. use a clean, dry toothbrush to brush off any shavings or other debris that may cling to the tool. apply machine oil lightly with a paper towel or microfiber cloth. let it sit for a few minutes, then wipe up any excess oil with a new paper towel.
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