Connections for Hydraulic Fluid Power- Ports and Stud Ends with Metric Threads and O-ring Sealing - Part 4 : Internal Hex Plugs
GB /T 2878.4 (PLIH) - 2011 液压传动连接 带米制螺纹和O形圈密封的油口和螺柱端 第4部分:内六角螺塞
See all versions and complete specifications: Connections for Hydraulic Fluid Power- Ports and Stud Ends with Metric Threads and O-ring Sealing - Part 4 : Hex Plugs — Full Specification Page
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M8 | 1 | 5 | 9.5 | 3 | 13.8 | 14 | 4 | 13.5 | 13.6 | 5.5 |
| M10 | 1.5 | 6 | 11 | 3 | 18.8 | 19 | 5 | 16 | 18.6 |
| 7.5 |
| M12 | 1.5 | 8 | 14 | 3 | 23.8 | 24 | 5 | 19 | 23.6 | 8.5 |
| M14 | 1.5 | 10 | 15 | 3 | 26.8 | 27 | 5 | 20 | 26.6 | 8.5 |
| M16 | 2 | 14 | 18.5 | 3 | 35.8 | 36 | 6 | 24.5 | 35.6 | 11 |
| M18 | 2 | 17 | 19 | 3 | 49.8 | 50 | 6 | 25.0 | 49.6 | 11 |
| M20 | 2 | 19 | 24 | 3 | 64.8 | 65 | 6 | 30.0 | 64.6 | 12 |
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.