d CARBIDE AERO-D-REAM Carbide Drill/Reamer for Composites List 257 SPEEDFEED CARBIDEP310BR 0˚ Tapered Drill/Reamer Tolerance I +0.0005”/-0 FL L EDP Approximate Hole Size Flute Taper Overall ShankLengthLengthLengthDiameter Number Fractional Wire LetterSizeGageSizemm Inch FL l L d 257-0980 - #40 - 2.49 0.0980 14.4 5.1 2.48 257-1094 7/64 - - 2.78 0.1094 16.1 5.6 76.2 2.77 257-1250 1/8 - - 3.18 0.1250 18.4 6.4 3.17 257-1280 - - - 3.25 0.1280 31.9 6.5 152.4 3.25 257-1285257-1286 -- #30 --- 3.26 0.1285 18.932.0 6.6 76.2152.4 3.26 257-1299 - - - 3.30 0.1299 19.2 3.29 257-1406 9/64 - - 3.57 0.1406 20.7 7.2 3.57 257-1440 - #27 -257-15625/32--3.663.97 0.1440 21.2 7.30.156223.07.9 76.2 3.653.96 257-1570 - #22 - 3.99 0.1570 23.2 8.0 3.98 257-1610257-1616 -- #20 -#20- 4.09 0.1610 23.740.1 8.2 152.4 4.08 257-1630 - - - 4.14 0.1630 24.1 8.3 4.14 257-1719 11/64 -257-1870---- 4.374.75 0.1719 25.4 8.70.187027.69.4 76.2 4.364.74 257-1875 3/16 - - 4.76 0.1875 27.7 9.5 4.76 257-1900257-1906257-1910257-1916----- ---#11-#11-4.834.85 0.1900 47.30.191047.69.6 101.6152.476.24.824.85 257-1920 -257-1930- -- -- 4.884.90 0.1920 47.80.193048.19.7 4.874.90 257-1935257-1940 -- #10 --- 4.914.93 0.1935 48.20.194048.39.8 4.914.92 257-2010 - #7 - 5.11 0.2010 50.1 10.1 101.6 5.10 257-2031 13/64 - - 5.16 0.2031 50.6 10.2 5.15 257-2040 - #6 - 5.18 0.2040 50.8 10.3 5.18 257-2055 - #5 - 5.22 0.2055 51.2 10.4 5.21 257-2180 - - - 5.54 0.2180 54.3 5.53 257-2188 7/32257-21867/32-- -- 5.56 0.2188 54.554.3 11.0 152.4 5.55 257-2210 - #2 - 5.61 0.2210 55.1 11.1 5.61 257-2280 - #1 -257-234415/64--5.795.95 0.22800.2344 56.858.4 11.511.8 101.6 5.795.95 257-2500 1/4257-25061/4-- -- 6.35 0.2500 54.362.3 12.5 152.4 6.35 257-2510 -257-2516- -- -- 6.38 0.2510 62.6 12.6 101.6152.4 6.37 257-2520 - - - 6.40 0.2520 62.8 6.40 257-2530 - - - 6.43 0.2530 63.0 12.7 6.42 257-2656 17/64 - - 6.75 0.2656 66.2 13.3 6.74 257-2812 9/32 - - 7.14 0.2812 70.1 14.1 7.14 257-2969 19/64 - - 7.54 0.2969 74.0 14.9 7.54 257-3120 -257-31255/16-- -- 7.927.94 0.31200.3125 46.146.2 15.6 101.6 7.927.93 257-3135 - - 7.96 0.3135 46.3 15.7 7.96 257-3280 21/64 - - 8.33 0.3280 48.4 16.4 8.33 257-3438 11/32 - - 8.73 0.3438 50.8 17.2 8.73 257-3500 - - - 8.89 0.3500 51.7 17.5 8.89 257-3594 23/64 - - 9.13 0.3594 53.1 17.9 9.12 Packed: 1 pc. Brazed shanks available on request: Threaded, Quick Change and Tri-Flat. 174 Composite Drills WWW.OSGTOOL.COM