根据《钢筋机械连接用套筒》(JG/T163-2013)标准,常见直螺纹套筒的规格尺寸如下表所示:

| 钢筋直径(mm) | 套筒外径(mm) | 套筒长度(mm) | 内孔直径(mm) | 牙型角(°) | 螺距(mm) |
|---|---|---|---|---|---|
| 12 | 19 | 35 | 11 | 75 | 2.5 |
| 14 | 21 | 35 | 11.7 | 75 | 2.5 |
| 16 | 24 | 40 | 14.7 | 75 | 2.5 |
| 18 | 27 | 45 | 16.5 | 75 | 2.5 |
| 20 | 30 | 50 | 18.5 | 75 | 2.5 |
| 22 | 32.5 | 55 | 20.5 | 75 | 2.5 |
| 25 | 37 | 60 | 23.5 | 75 | 3 |
| 28 | 41 | 65 | 26.5 | 75 | 3 |
| 32 | 47 | 75 | 30.3 | 75 | 3 |
| 36 | 53 | 85 | 34.5 | 75 | 3 |
| 40 | 58 | 90 | 37.5 | 75 | 3 |