CARBIDE AERO-D-REAM Carbide Drill/Reamer for Composites List 257 SPEED FEED P310 CARBIDE BR 0˚ Tapered Drill/Reamer Tolerance I +0.0005”/-0 d FL L Flute Taper Overall Shank Approximate Hole Size EDP Length Length Length Diameter Number Fractional Wire Letter mm Inch FL l L d Size Gage Size 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 3.25 257-1285 - #30 - 18.9 76.2 3.26 0.1285 3.26 257-1286 - - - 32.0 6.6 152.4 257-1299 - - - 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 - 3.66 0.1440 21.2 7.3 3.65 76.2 257-1562 5/32 - - 3.97 0.1562 23.0 7.9 3.96 257-1570 - #22 - 3.99 0.1570 23.2 8.0 3.98 257-1610 - #20 - 23.7 4.09 0.1610 8.2 4.08 257-1616 - #20 - 40.1 152.4 257-1630 - - - 4.14 0.1630 24.1 8.3 4.14 257-1719 11/64 - - 4.37 0.1719 25.4 8.7 4.36 76.2 257-1870 - - - 4.75 0.1870 27.6 9.4 4.74 257-1875 3/16 - - 4.76 0.1875 27.7 9.5 4.76 257-1900 - - - 101.6 4.83 0.1900 47.3 4.82 257-1906 - - - 152.4 9.6 257-1910 - #11 - 76.2 4.85 0.1910 47.6 4.85 257-1916 - #11 - 257-1920 - - - 4.88 0.1920 47.8 4.87 9.7 257-1930 - - - 4.90 0.1930 48.1 4.90 257-1935 - #10 - 4.91 0.1935 48.2 4.91 9.8 257-1940 - - - 4.93 0.1940 48.3 4.92 257-2010 - #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 7/32 - - 54.5 11.0 5.56 0.2188 5.55 257-2186 7/32 - - 54.3 152.4 257-2210 - #2 - 5.61 0.2210 55.1 11.1 5.61 257-2280 - #1 - 5.79 0.2280 56.8 11.5 5.79 101.6 257-2344 15/64 - - 5.95 0.2344 58.4 11.8 5.95 257-2500 1/4 - - 54.3 12.5 6.35 0.2500 6.35 257-2506 1/4 - - 62.3 152.4 257-2510 - - - 101.6 6.38 0.2510 62.6 12.6 6.37 257-2516 - - - 152.4 257-2520 - - - 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 - - - 7.92 0.3120 46.1 7.92 15.6 101.6 257-3125 5/16 - - 7.94 0.3125 46.2 7.93 257-3135 - - 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