UNC 機械粗牙螺絲在台灣比較容易採購與選擇的螺絲尺寸為2#-56、4#-40、6#-32、8#-32、10#-24為主其餘不容易有庫存品項歡迎聯絡查詢是否有類似的品項可以供應
| UNC MACHINE SCREW 2A Q (60º) | |||||
| UNC 機械粗牙螺絲 2A Q (60º) 規格 | |||||
| 規格 | 牙數T | 外徑（D） | 輾造徑 | ||
| MAX | MIN | MAX | MIN | ||
| #1 | 64 | 1.838 | 1.743 | 1.570 | 1.540 |
| #2 | 56 | 2.169 | 2.066 | 1.860 | 1.840 |
| #3 | 48 | 2.496 | 2.383 | 2.140 | 2.110 |
| #4 | 40 | 2.824 | 2.695 | 2.400 | 2.360 |
| #5 | 40 | 3.154 | 3.026 | 2.720 | 2.690 |
| #6 | 32 | 3.484 | 3.333 | 2.950 | 2.910 |
| #8 | 32 | 4.142 | 3.991 | 3.600 | 3.570 |
| #10 | 24 | 4.800 | 4.618 | 4.090 | 4.050 |
| #12 | 24 | 5.461 | 5.279 | 4.750 | 4.700 |
| 1/4 | 20 | 6.322 | 6.117 | 5.500 | 5.450 |
| 5/16 | 18 | 7.907 | 7.687 | 6.980 | 6.930 |
| 3/8 | 16 | 9.491 | 9.254 | 8.450 | 8.400 |
| 7/16 | 14 | 11.076 | 10.816 | 9.890 | 9.830 |
| 1/2 | 13 | 12.661 | 12.386 | 11.390 | 11.320 |
| 9/16 | 12 | 14.246 | 13.958 | 12.870 | 12.800 |
| 5/8 | 11 | 15.834 | 15.528 | 14.330 | 14.260 |
| 3/4 | 10 | 19.004 | 18.677 | 17.340 | 17.270 |
| 7/8 | 9 | 22.176 | 21.824 | 20.340 | 20.260 |
| 1″ | 8 | 25.349 | 24.969 | 23.280 | 23.200 |
| 1⅛ | 7 | 28.519 | 28.103 | 26.160 | 26.070 |
| 1¼ | 7 | 31.694 | 31.278 | 29.330 | 29.240 |
| 1⅜ | 7 | 34.864 | 34.002 | 32.120 | 32.020 |
| 1½ | 6 | 38.039 | 37.577 | 35.290 | 35.080 |
| 1¾ | 5 | 44.381 | 43.861 | 4108.000 | 40.860 |
