| BA MACHINE SCREW 2A Q（47.5º） | |||||
| BA 機械螺絲 2A Q (47.5º) 規格 | |||||
| 規格 | 牙距P | 外徑（D） | 輾造徑 | ||
| MAX | MIN | MAX | MIN | ||
| 0 BA | 1.0 | 5.970 | 5.820 | 5.320 | 5.220 |
| 1 BA | 0.90 | 5.270 | 5.120 | 4.685 | 4.580 |
| 2 BA | 0.81 | 4.676 | 4.526 | 4.150 | 4.016 |
| 3 BA | 0.73 | 4.078 | 3.938 | 3.604 | 3.479 |
| 4 BA | 0.66 | 3.570 | 3.460 | 3.141 | 3.045 |
| 5 BA | 0.59 | 3.180 | 3.050 | 2.797 | 2.779 |
| 6 BA | 0.53 | 2.780 | 2.660 | 2.436 | 2.327 |
| 7 BA | 0.48 | 2.470 | 2.380 | 2.200 | 2.180 |
| 8 BA | 0.43 | 1.810 | 1.720 | 1.531 | 1.450 |
