drill bit sizes pdf

drill bit sizes pdf

Drill Bit Conversion Chart Numbers amp Letters Wire Gauge Drill Size Comparison Chart gauge inches mm gauge inches mm gauge inches mm gauge inches mm 80 0 0135 0 343 53 0 0595 1 511 26 0 147 3 734 A 0 234 5 944 79 0 0145 0 368 52 0 0635 1 613 25 0 1495 3 797 B 0 238 6 045 78 0 016 0 406 51 0 067 1 702 24 0 152 3 861 C 0 242 6 147Drag bits are offered in Chevron and Step types with 3 or 4 wings and in sizes from 1 7 8 quot to 26 quot Claw bits are available in sizes from 3 1 2 quot to 24 quot and with a variety of cutter quantity options All bits are available with a number of custom manufacturing options and any thread connection to fi t a wide range of drilling requirements Drill Sizes and Conversions Drill Sizes Conversions Numbers amp Letters Fractional Metric Inch mm 2 05 0 0807 2 050 46 0 0810 2 057 45 0 0820 2 083 2 10 0 0827 2 100Drill sizes given are the closest drill size TAP DRILL SIZES INCH amp METRIC with DRILL SIZE FORMULAS cont ENGINEERING DATA THREADS PER INCH DOUBLE THREAD DEPTH 50 THREAD 55 THREAD 60 THREAD RECOMMENDED RANGE 80 THREAD 85 THREAD 65 THREAD 70 THREAD 75 THREAD 6 21651 1083 1192 1300 1408 operating hours our engineers have applied a systems approach to the drill bit tech nology Additional features are present on these bits to maximize life and operational penetration rates in challenging environments BIT SIZE mm inch APPROX WT kg lb X05 X07 X10 X20 X30 X40 X47 X50 X60 X70 159 6 188 quot 20 44 X 171 6 190 quot 22 49 X X X X

NPT amp NPTF NPS amp NPSF Drill Size Pitch Drill Size TPI

Drill Bit Sizes 0 0330 66 0 1730 17 0 5469 35 64 0 0335 0 85 0 1770 16 0 5512 14 0 0350 65 0 1772 4 5 0 5625 9 16 0 0354 0 9 0 1800 15 0 5709 14 5 0 0360 64 0 1820 14 0 5781 37 64 0 0370 63 0 1850 13 0 5905 15 0 0374 0 95 0 1875 3 16 0 5938 19 32 0 0380 62 0 1890 12 0 6094 39 64 0 Drill Bit Size Chart This chart shows decimal inch equivalents for fractional inch wire size letter size and metric drill bits up to two inches in diameter Size Decimal Equivalent Size Decimal Equivalent Size Decimal Equivalent Size Decimal Equivalent 97 0 0059 2 60 mm 0 1024 M 0 295 63 64 quot 0 9844 96 0 0063 37 0 104 7 50 mm When drilling hardwood floor boards for trailers it is recommended that the RPM s and speed of feed is reduced Reasoning for this is hardness of material and depth of hole being cut If using a 5 16 quot drill bit that will drill through 1 3 8 quot hardwood board the recommended rate of Metric drill bit sizes diameter of the bit in terms of standard metric lengths Letter drill bit sizes the sizes are indicated in letters from size A the smallest to size Z the largest Number drill bit sizes the sizes are indicated in numbers range from size 80 the smallest to size 1 the largest Number and letter sizes are commonly used for twist drill bits rather than other In general there are 3 categories of common imperial drill sizes fractional in 1 64 quot increments lettered A Z and numbered 1 80 Generated by K Brooker

Inch MetrIc tap DrIll SIzeS amp DecIMal equIvalentS

Centre Drill Bit Sizes 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 contains all commonly used centre drill bit sizes Size designation Drill diameter inches mm 135 176 Bits are intended for hardened materials and cut less aggressively than 118 176 Drill Bits 118 176 bits are used for soft materialsTAPPING DRILL SIZES IMPERIAL THREADS Tap Size B S Whit U N F U N C B S F B S P B A Drill Size Drill Size Drill Size Drill Size Drill Size Tap Size Drill Size 1 16 1 1mm 0 5 1mm 3 32 1 8mm 1 8 2 5mm 11 32 1 4 5mm 5 32 2 9mm 1 8 3 16 3 7mm 5 32 2 5 32 7 8 3 2021 nbsp 0183 32 Fractional and Metric Sizes ref ANSI ASME B94 11M 1993 Posted in Reference Data What s New Tagged ANSI bit size Drills ISO 2 9 9 2018 nbsp 0183 32 Metric Drill Bit Sizes Metric drill sizes are used primarily in Europe and use metric units to measure the drill bit diameter There are a variety of standards used to define drill sizes the most common one in the UK is the British Standard BS 328 set which includes twist drill bit sizes between 0 2 mm and 25 mm

TAPPING DRILL SIZES Prescott Engineering

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