2018年9月9日 · Centre Drill Bit Sizes. These specialist drill bits are used for drilling centre holes at two different angles, 60 degrees and 90 degrees. They are commonly used to drill lathe centres and spotting drills, i.e.marking holes to guide twist drilling. The drill size chart below contains all commonly used centre drill bit sizes.

Centerdrill Dimensions for standard type and bell type combined drill and countersinks

These specialist drill bits are used for drilling centreholes at two different angles, 60 degrees and90 degrees. They are commonly used to drill lathe centres and spotting drills, i.e.marking holes to guide twist drilling. The drill size chart below …

Body Diameter: Drill Diameter: Drill Length: Overall Length: Size: Inches: MM: Inches: MM: Inches: MM: Inches: MM: 00.125: 3.18.025.64.030.76: 1.125: 29: 0.125: 3.18 ...

DRILL SIZE CHART 0.2087 TO 1.0000 INCH RANGE Size in Size Designation inches Size Designation 7.2 mm 0.2835 9.40 mm 7.25 mm 0.2854 9.5 mm 7.3 mm 0.2874 3/8 inch Letter L 0.2900 Letter V 7.40 mm 0.2913 9.60 mm Letter M 0.2950 ...

Use the table below to find the recommended depth range of your center drill.

In general, there are 3 categories of common imperial drill sizes: fractional (in 1/64" increments), lettered (A-Z), and numbered (1-80).

Drill Sizes and Conversions Drill Sizes Conversions Numbers & Letters Fractional Metric Inch mm 100 0.0050 0.127 99 0.0053 0.135 98 0.0055 0.140 97 0.0059 0.150 96 0.0063 0.160 95 0.0067 0.170 94 0.0071 0.180 93 0.0075 0.190 92 0.20 0.0079 0.200 91 0.21 0.0083 0.210 90 0.22 0.0087 0.220 89 0.23 0.0091 0.230

C R V -- ! TRIANGLE FASTENER CORPORATION 800.486.1832 www..m MD176.0423 DECIMAL EQUIVALENT (inch) for Fractional, Number, Letter & Metric Bits

Drill Size & Decimal Equivalent Chart (Fractional • Wire •Metric • Letter Sizes) DRILL SIZE DECIMAL DRILL SIZE DECIMAL DRILL SIZE DECIMAL DRILL SIZE DECIMAL DRILL SIZE DECIMAL DRILL SIZE DECIMAL DRILL SIZE DECIMAL 00.10 .0039 00.90 .0354 #44 .0860 04.00 .1575 06.10 .2402 11/32 .3438 14.50 .5709