Letter drill sizes decimal. Drill sizes helpful for race car hot rod and custom car builders. A chart showing decimal equivalents of wire letter and fractional size drills. Drill bits can be made in any size but standards define sets of sizes that are widely produced and stocked. Although the asme b9411m twist drill standard for example lists sizes as small as size 97 sizes smaller than 80 are rarely encountered in practice.
High quality drill bits review low price drill bits review in nearly all other countries metric drill bit sizes are most common like bovidix 1902103423. The asme b9411m twist drill standard establishes number drill bit sizes from size 1 to 97. Decimal equivalents from 80 to 1 0135 to 1000 drill. Drill number decimal cross reference drill number decimal inch decimal mm 97 0059 150 96 0063 160 95 0067 170 94 0071 180 93 0075 190 92 0079 200 91.
In practice you will seldom see number sizes past 80. Number drill bit sizes letter drill bit sizes. Decimal equivalents for drill sizes inch decimal equivalents metric sizes fractional sizes number sizes letter sizes. A good drill size chart can also be used as a handy decimal equivalence chart as well as to convert decimal sizes to metric.
Letter and fractional size drills. Home tesla writings. Drill size decimal equivalent tap drill chart decimal equivalent chart drill decimal size mm equivalent 010 0039 020 0079 025 0098 030 0118 80 034 0135. Letter size drills diameter in inches.
Printable drill decimal equivalents chart number letter and fraction drill sizes.