ОБРАБОТКА ОТВЕРСТИЙ Отверстия под резьбу – размеры, метрические резьбы по ISO и дюймовые резьбы Нарезание резьбы метчиком – Резьбофрезерование Резьба Дюйм. Шаг Отверстие Ø Toleranceminimum Допускмакс. M2 – 0,4 1,60 1,570 1,670 M2,5 – 0,45 2,05 2,015 2,130 – UNC4-40 – 2,35 2,160 2,380 M3 – 0,5 2,50 2,470 2,590 – UNC5-40 – 2,65 2,490 2,690 – UNC6-32 – 2,85 2,645 2,890 M3,5 – 0,6 2,90 2,850 3,000 M4 – 0,7 3,30 3,250 3,400 – UNC8-32 – 3,50 3,350 3,530 M4,5 – 0,75 3,70 3,690 3,870 – UNC10-24 – 3,90 3,685 3,960 M5 – 0,8 4,20 4,140 4,330 – UNC12-24 – 4,50 4,350 4,590 M6 – 1 5,00 4,920 5,150 – UNC1/4-20 – 5,10 4,980 5,260 M7 – 1 6,00 5,980 6,260 – NPT1/16 – 6,15 6,200 TAPER 1:16 – UNC5/16-18 – 6,60 6,415 6,730 M8 – 1,25 6,80 6,650 6,910 – UNC3/8-16 – 8,00 7,810 8,160 – NPT1/8 – 8,40 8,500 TAPER 1:16 M10 – 1,5 8,50 8,380 8,675 – G1/8 – 8,80 8,570 8,840 – UNC7/16-14 – 9,40 9,150 9,550 M12 – 1,75 10,20 10,110 10,440 – UNC1/2-13 – 10,80 10,590 11,010 – NPT1/4 – 11,10 11,100 TAPER 1:16 – G1/4 – 11,80 11,445 11,890 M14 – 2 12,00 11,835 12,210 – UNC5/8-11 – 13,50 13,380 13,860 M16 – 2 14,00 13,835 14,210 – NPT3/8 – 14,30 14,550 TAPER 1:16 – G3/8 – 15,25 14,950 15,395 M18 – 2,5 15,50 15,295 15,740 M20 – 2,5 17,50 17,295 17,740 – NPT1/2 – 17,90 18,000 TAPER 1:16 – G1/2 – 19,00 18,635 19,170 M22 – 2,5 19,50 19,300 19,740 – G5/8 – 21,00 20,590 21,120 M24 – 3 21,00 20,760 21,250 – NPT3/4 – 23,20 23,250 TAPER 1:16 M27 – 3 24,00 23,760 24,250 – G3/4 – 24,50 24,120 24,650 M30 – 3,5 26,50 26,380 26,670 – G7/8 – 28,25 27,880 28,415 – NPT1 – 29,00 29,200 TAPER 1:16 M33 – 3,5 29,50 28,706 29,211 – G1 – 30,75 30,300 30,930 M36 – 4 32,00 31,670 32,270 M39 – 4 35,00 34,093 35,670 – G1,1/8 – 35,50 34,940 35,580 M42 – 4,5 37,50 37.220 37,799 – G1,1/4 – 39,50 38,960 39,590 – G1,1/2 – 45,25 44,845 45,485 468