| Type | Widtha | Thicknessb | Angleθ | The effective picth length (inch) |
|
| AA | 0.5" | (13.0mm) | 0.40" | (10.3mm) | 40° | 50 53 56 60 63 67 71 75 80 85 90 95 100 106 112 118 125 132 140 |
| BB | 0.67" | (17.0mm) | 0.53" | (13.5mm) | 40° | 60 63 67 71 75 80 85 90 95 100 106 112 118 125 132 140 150 160 140 180 190 200 212 224 236 250 |
| CC | 0.87" | (22.0mm) | 0.70" | (18.0mm) | 40° | 132 140 150 160 170 180 190 200 212 224 236 250 265 280 300 |
