Общий каталог OSG 2018 - 2019 - страница 662

ANSI Thread Limits Metric Size Taps - Ground Thread (Table 337) Nom-inalPitch Major DiameterInches Standard Pitch Diameter Limits Inches Size Basic D3 Limits D4 Limits D5 Limits D6 Limits D7 Limits D8 Limits D9 Limits Basic Min. Max. Pitch mm mm Diam. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 1.6 0.35 0.062992 0.0641 0.0651 0.054042 0.0550 0.0556 – – – – – – – – – – – – 2.0 0.4 0.078740 0.0801 0.0811 0.068511 0.0695 0.0701 – – – – – – – – – – – – 2.5 0.45 0.098425 0.0999 0.1009 0.086918 0.0879 0.0885 – – – – – – – – – – – – 3.0 0.5 0.118110 0.1198 0.1208 0.105324 0.1063 0.1069 – – – – – – – – – – – – 3.5 0.6 0.137795 0.1397 0.1407 0.122452 – – 0.1237 0.1245 – – – – – – – – – – 4.0 0.7 0.157480 0.1597 0.1613 0.139580 – – 0.1408 0.1416 – – – – – – – – – – 5.0 0.8 0.196850 0.1994 0.2010 0.176393 – – 0.1776 0.1784 – – – – – – – – – – 6.0 1.0 0.236220 0.2395 0.2411 0.210648 – – – – 0.2122 0.2132 – – – – – – – – 8.0 1.25 0.314960 0.3189 0.3214 0.282995 – – – – 0.2843 0.2855 – – – – – – – – 10 1.5 0.393700 0.3985 0.4010 0.355343 – – – – – – 0.3572 0.3584 – – – – – – 12 1.75 0.472440 0.4780 0.4805 0.427690 – – – – – – 0.4295 0.4307 – – – – – – 14 2.0 0.551180 0.5575 0.5600 0.500037 – – – – – – – – 0.5020 0.5036 – – – – 16 2.0 0.629920 0.6363 0.6388 0.578777 – – – – – – – – 0.5807 0.5823 – – – – 20 2.5 0.787400 0.7954 0.7979 0.723471 – – – – – – – – 0.7254 0.7270 – – – – 24 3.0 0.944880 0.9544 0.9583 0.868165 – – – – – – – – – – 0.8706 0.8722 – – 30 3.5 1.181100 1.1922 1.1961 1.091599 – – – – – – – – – – – – 1.0942 1.0962 36 4.0 1.417320 1.4300 1.4339 1.315034 – – – – – – – – – – – – 1.3176 1.3196 LEAD TOLERANCE A maximum lead deviation of ±0.013 mm within any two threads not farther apart than 25 mm is permitted. ANGLE TOLERANCE Pitch (mm) Deviation in Half Angle Over 0.25 to 2.5 Incl. ±30’ Over 2.5 to 4 Incl. ±25’ Over 4 to 6 Incl. ±20” FORMULA Min. Major Dia. = Basic + W Max. Pitch Dia. = Basic + Y Max. Major Dia. = Min. + X Min. Pitch Dia. = Max. - Z For Values of W, Y & Z, See Table 341 In all cases, the tap major and pitch diameter inch conversions have been rounded upwards to the next ten thousandth of an inch. Basic values agree with B1 Report—ISO Metric Screw Threads, Table 9B. OH Tap Limits 662 Threading Technical WWW.OSGTOOL.COM