| 
      
        | PP | 牙數/25.4mm |  
        | P | 螺距 |  
        | h | 螺紋高度 |  
        | d | 大徑 | d=D |  
        | d2 | 中徑 | d2=D2 |  
        | d1 | 小徑 | d1=D1 |  
        | T | 内螺紋 D2 | 下公差 |  
                    | 上公差 |  
            | 外螺紋 d2 | A級 下公差 |  
                    | B級 下公差 |  
                    | 上公差 |  
            | 内螺紋 D1 | 下公差 |  
                    | 上公差 |  
            | 外螺紋 d | 下公差 |  
                    | 上公差 |  | 
                    
                        | 28 | 28 | 19 | 19 | 14 | 14 | 14 | 14 | 11 | 11 | 11 | 11 |  
                        | 0.907 | 0.907 | 1.337 | 1.337 | 1.814 | 1.814 | 1.814 | 1.814 | 2.309 | 2.309 | 2.309 | 2.309 |  
                        | 0.581 | 0.581 | 0.856 | 0.856 | 1.162 | 1.162 | 1.162 | 1.162 | 1.479 | 1.479 | 1.479 | 1.479 |  
                        | 7.723 | 9.728 | 13.157 | 16.662 | 20.955 | 22.911 | 26.441 | 30.201 | 33.249 | 37.897 | 41.910 | 47.803 |  
                        | 7.142 | 9.147 | 12.301 | 15.806 | 19.793 | 21.749 | 25.279 | 29.039 | 31.770 | 36.418 | 40.431 | 46.324 |  
                        | 6.561 | 8.566 | 11.445 | 14.950 | 18.631 | 20.587 | 24.117 | 27.877 | 30.291 | 34.939 | 38.952 | 44.845 |  
                        | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  
                        | +0.107 | +0.107 | +0.125 | +0.125 | +0.142 | +0.142 | +0.142 | +0.142 | +0.180 | +0.180 | +0.180 | +0.180 |  
                        | -0.107 | -0.107 | -0.125 | -0.125 | -0.142 | -0.142 | -0.142 | -0.142 | -0.180 | -0.180 | -0.180 | -0.180 |  
                        | -0.214 | -0.214 | -0.250 | -0.250 | -0.284 | -0.284 | -0.284 | -0.284 | -0.360 | -0.360 | -0.360 | -0.360 |  
                        | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  
                        | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  
                        | +0.282 | +0.282 | +0.445 | +0.445 | +0.541 | +0.541 | +0.541 | +0.541 | +0.640 | +0.640 | +0.640 | +0.640 |  
                        | -0.214 | -0.214 | -0.250 | -0.250 | -0.284 | -0.284 | -0.284 | -0.284 | -0.360 | -0.360 | -0.360 | -0.360 |  
                        | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |