ER压帽
特点：压帽的特点是工艺流程长。 整体淬火后精加工螺纹，关键尺寸更加精确，螺纹等级达到4H级。
| Size | D | d | L | M | Wt (kg) |
| ER16-UM | 32 | 26 | 17.5 | M22X1.5 | 0.05 |
| ER20-UM | 35 | 29 | 19 | M25X1.5 | 0.1 |
| ER25-UM | 42 | 36 | 20 | M32X1.5 | 0.14 |
| ER32-UM | 50 | 44 | 22.5 | M40X1.5 | 0.2 |
| ER40-UM | 63 | 57 | 25.5 | M50X1.5 | 0.3 |
| ER50-UM | 78 | 71 | 35.5 | M64X2 | 0.5 |
| Size | D | d | L | M | Wt (kg) |
| ER11-A | 19 | 17 | 11.3 | M14X0.75 | 0.005 |
| ER16-A | 28 | 25 | 17.5 | M22X1.5 | 0.01 |
| ER20-A | 34 | 30 | 19 | M25X1.5 | 0.05 |
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| Size | D | d | L | M | Wt (kg) |
| ER8-M | 12 | 10 | 10 | M10X0.75 | 0.005 |
| ER11-M | 16 | 12 | 12 | M13X0.75 | 0.01 |
| ER16-M | 22 | 17.2 | 18 | M19X1 | 0.05 |
| ER20-M | 28 | 22.5 | 19 | M24X1 | 0.05 |
| ER25-M | 35 | 28.6 | 20 | M30X1 | 0.08 |
