Таблица особо мелкой резьбы UNEF

 
Американская резьба с особо мелким шагом – UNEF
Резьба Диаметры резьбы в мм n P мм
D Dp Di
№12 5,490 4,900 4,627 32 0,793
1/4 6,350 5,760 5,491 32 0,793
5/16 7,940 7,421 7,080 32 0,793
3/8 9,525 9,010 8,670 32 0,793
7/16 11,112 10,523 10,130 28 0,910
1/2 12,700 12,110 11,720 28 0,910
9/16 14,300 13,600 13,141 24 1,060
5/8 15,880 15,190 14,730 24 1,060
11/16 17,462 16,774 16,320 24 1,060
3/4 19,050 18,224 17,680 20 1,270
13/16 20,640 19,812 19,263 20 1,270
7/8 22,225 21,400 20,850 20 1,270
15/16 23,812 22,990 22,440 20 1,270
7/16 11,112 10,290 9,740 20 1,270
1 25,400 24,574 24,030 20 1,270
1/16 26,990 26,070 25,461 18 1,411
1/8 28,575 27,660 27,050 18 1,411
3/16 30,162 29,245 28,635 18 1,411
1/4 31,750 30,833 30,223 18 1,411
5/16 33,340 32,420 31,811 18 1,411
3/8 34,925 34,010 33,400 18 1,411
7/16 36,260 35,600 34,985 18 1,411
1/2 38,100 37,183 36,573 18 1,411
9/16 39,690 38,770 38,161 18 1,411
5/8 41,275 40,360 39,750 18 1,411
11/16 42,862 41,950 41,340 18 1,411
Unified National Extra Fine