Каталог Widia all star 2020 - страница 286

• TABLE OF CONTENTS
• INDEXABLE MILLING
• 0º/90º SHOULDER MILLS
• 90° HIGH-SPEED CUTTING MILLS
• FACE MILLS
• HIGH-FEED MILLS
• COPY MILLS
• SOLID END MILLING
• HIGH-PERFORMANCE SOLID CARBIDE END MILLS
• GENERAL PURPOSE SOLID CARBIDE END MILLS
• HOLEMAKING
• SOLID CARBIDE DRILLS
• MODULAR DRILLS
• INDEXABLE DRILLS
• TAPPING
• TURNING
• HIGH-PERFORMANCE INSERTS
• GROOVING & CUT-OFF
• Informational Icons Guide
• Material Overview • DIN

TURNINGTAPPINGHOLEMAKINGSOLID END MILLINGINDEXABLE MILLING Technical Information Tap Recommendations for Classes 2B and 3B TTUnified Inch Screw Threads recommended internal thread tap limits1 pitch diameter limits min max max thread class class all classes class class size/pitch 2B 3B (Basic) 2B 3B 0 - 80 H2 H2 0.0519 0.0542 0.0536 1 - 64 H2 H2 0.0629 0.0655 0.0648 1 - 72 H2 H2 0.0640 0.0665 0.0659 2 - 56 H2 H2 0.0744 0.0772 0.0765 2 - 64 H2 H2 0.0759 0.0786 0.0779 3 - 48 H3 H2 0.0855 0.0885 0.0877 3 - 56 H2 H2 0.0874 0.0902 0.0895 4 - 40 H3 H2 0.0958 0.0991 0.0982 4 - 48 H3 H2 0.0985 0.1016 0.1008 5 - 40 H3 H2 0.1088 0.1121 0.1113 5 - 44 H3 H2 0.1102 0.1134 0.1126 6 - 32 H3 H2 0.1177 0.1214 0.1204 6 - 40 H3 H2 0.1218 0.1252 0.1243 8 - 32 H3 H3 0.1437 0.1475 0.1465 8 - 36 H3 H3 0.1460 0.1496 0.1487 10 - 24 H3 H3 0.1629 0.1672 0.1661 10 - 32 H3 H3 0.1697 0.1736 0.1726 12 - 24 H3 H3 0.1889 0.1933 0.1922 12 - 28 H3 H3 0.1928 0.1970 0.1959 1/4 - 20 H5 H3 0.2175 0.2224 0.2211 1/4 - 28 H4 H3 0.2268 0.2311 0.2300 5/16 - 18 H5 H3 0.2764 0.2817 0.2803 5/16 - 24 H4 H3 0.2854 0.2902 0.2890 3/8 - 16 H5 H3 0.3344 0.3401 0.3387 3/8 - 24 H4 H3 0.3479 0.3528 0.3516 7/16 - 14 H5 H3 0.3911 0.3972 0.3957 7/16 - 20 H5 H3 0.4050 0.4104 0.4091 1/2 - 13 H5 H4 0.4500 0.4565 0.4548 1/2 - 20 H5 H3 0.4675 0.4731 0.4717 9/16 - 12 H5 H4 0.5084 0.5152 0.5135 9/16 - 18 H5 H3 0.5264 0.5323 0.5308 5/8 - 11 H5 H4 0.5660 0.5732 0.5714 5/8 - 18 H5 H3 0.5889 0.5949 0.5934 3/4 - 10 H5 H4 0.6850 0.6927 0.6907 1Tap H limit selected for 3B will also produce thread to 2B. NOTE: The above recommended taps normally produce the class of thread indicated in average materials when used with reasonable care. However, if the specified tap does not provide a satisfactory gage fit, choose an alternate tap limit. D12 widia.com