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

Technical Information INDEXABLE MILLING Tap Recommendations for Classes 2B and 3B TTUnified Inch Screw Threads recommended internal thread tap limits 1 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 SOLID END MILLING 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 HOLEMAKING 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 TAPPING 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 TURNING 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 Tap H limit selected for 3B will also produce thread to 2B. 1 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