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	  Резьбы UNC ANSI B1.1
UNC Thread ANSI B1.1
UNC - Unified Coarse Thread - Унифицированная крупная резьба
Старое обозначение резьбы NC. Резьбы UNC и NC взаимозаменяемы.
        
          
            | Типоразмер | 
            Наружный диаметр, дюймов | 
            Наружный диаметр, мм | 
              	
Диаметр сверления, мм mm | 
            Число витков на дюйм | 
            Шаг, мм | 
           
          
            | N 1 - 64 UNC | 
            0,073 | 
            1,854 | 
            1,50 | 
            64 | 
            0,397 | 
           
          
            | N 2 - 56 UNC | 
            0,086 | 
            2,184 | 
            1,80 | 
            56 | 
            0,453 | 
           
          
            | N 3 - 48 UNC | 
            0,099 | 
            2,515 | 
            2,10 | 
            48 | 
            0,529 | 
           
          
            | N 4 - 40 UNC | 
            0,112 | 
            2,845 | 
            2,35 | 
            40 | 
            0,635 | 
           
          
            | N 5 - 40 UNC | 
            0,125 | 
            3,175 | 
            2,65 | 
            40 | 
            0,635 | 
           
          
            | N 6 - 32 UNC | 
            0,138 | 
            3,505 | 
            2,85 | 
            32 | 
            0,794 | 
           
          
            | N 8 - 32 UNC | 
            0,164 | 
            4,166 | 
            3,50 | 
            32 | 
            0,794 | 
           
          
            | N 10 - 24 UNC | 
            0,190 | 
            4,826 | 
            4,00 | 
            24 | 
            1,058 | 
           
          
            | N 12 - 24 UNC | 
            0,216 | 
            5,486 | 
            4,65 | 
            24 | 
            1,058 | 
           
          
            | 1/4" - 20 UNC | 
            0,250 | 
            6,350 | 
            5,35 | 
            20 | 
            1,270 | 
           
          
            | 5/16" - 18 UNC | 
            0,313 | 
            7,938 | 
            6,80 | 
            18 | 
            1,411 | 
           
          
            | 3/8" - 16 UNC | 
            0,375 | 
            9,525 | 
            8,25 | 
            16 | 
            1,587 | 
           
          
            | 7/16" - 14 UNC | 
            0,438 | 
            11,112 | 
            9,65 | 
            14 | 
            1,814 | 
           
          
            | 1/2" - 13 UNC | 
            0,500 | 
            12,700 | 
            11,15 | 
            13 | 
            1,954 | 
           
          
            | 9/16" - 12 UNC | 
            0,563 | 
            14,288 | 
            12,60 | 
            12 | 
            2,117 | 
           
          
            | 5/8" - 11 UNC | 
            0,625 | 
            15,875 | 
            14,05 | 
            11 | 
            2,309 | 
           
          
            | 3/4" - 10 UNC | 
            0,750 | 
            19,050 | 
            17,00 | 
            10 | 
            2,540 | 
           
          
            | 7/8" - 9 UNC | 
            0,875 | 
            22,225 | 
            20,00 | 
            9 | 
            2,822 | 
           
          
            | 1" - 8 UNC | 
            1,000 | 
            25,400 | 
            22,25 | 
            8 | 
            3,175 | 
           
          
            | 1 1/8" - 7 UNC | 
            1,125 | 
            28,575 | 
            25,65 | 
            7 | 
            3,628 | 
           
          
            | 1 1/4" - 7 UNC | 
            1,250 | 
            31,750 | 
            28,85 | 
            7 | 
            3,628 | 
           
          
            | 1 3/8" - 6 UNC | 
            1,375 | 
            34,925 | 
            31,55 | 
            6 | 
            4,233 | 
           
          
            | 1 1/2" - 6 UNC | 
            1,500 | 
            38,100 | 
            34,70 | 
            6 | 
            4,233 | 
           
          
            | 1 3/4" - 5 UNC | 
            1,750 | 
            44,450 | 
            40,40 | 
            5 | 
            5,080 | 
           
          
            | 2" - 4 1/2 UNC | 
            2,000 | 
            50,800 | 
            46,30 | 
            4,5 | 
            5,644 | 
           
          
            | 2 1/4" - 4 1/2 UNC | 
            2,250 | 
            57,150 | 
            52,65 | 
            4,5 | 
            5,644 | 
           
          
            | 2 1/2" - 4 UNC | 
            2,500 | 
            63,500 | 
            58,50 | 
            4 | 
            6,350 | 
           
          
            | 2 3/4" - 4 UNC | 
            2,750 | 
            69,850 | 
            64,75 | 
            4 | 
            6,350 | 
           
          
            | 3" - 4 UNC | 
            3,000 | 
            76,200 | 
            71,10 | 
            4 | 
            6,350 | 
           
          
            | 3 1/4" - 4 UNC | 
            3,250 | 
            82,550 | 
            77,45 | 
            4 | 
            6,350 | 
           
          
            | 3 1/2" - 4 UNC | 
            3,500 | 
            88,900 | 
            83,80 | 
            4 | 
            6,350 | 
           
          
            | 3 3/4" - 4 UNC | 
            3,750 | 
            95,250 | 
            90,15 | 
            4 | 
            6,350 | 
           
          
            | 4" - 4 UNC | 
            4,000 | 
            101,600 | 
            96,50 | 
            4 | 
            6,350 | 
           
          
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