Metallic Tube Connections for Fluid Power and General use — Part 3: O-ring Face Seal Connectors [Tube nuts]
ISO 8434-3 - 2005 液压及通用金属管连接件——第3部分：O形圈密封管件 [管螺母]
See all versions and complete specifications: Metallic Tube Connections for Fluid Power and General use — Part 3: O-ring Face Seal Connectors [Tube nuts] — Full Specification Page
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 5/8 | 18.3 | 12.00 | 11.90 | 14.5 | 14.7 | 18.0 | 17.7 | 18 UNF | 12.10 |
| 8 | 13/16 | 23.3 | 16.60 | 16.50 | 19.1 | 19.3 | 23.0 | 22.7 | 16 UN | 16.70 |
| 10 | 1 3/16 | 34.8 |
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.
| 24.15 |
| 24.05 |
| 28.0 |
| 28.3 |
| 34.5 |
| 34.2 |
| 12 UN |
| 24.25 |
| 12 | 1 7/16 | 39.8 | 29.10 | 29.00 | 34.4 | 34.7 | 39.5 | 39.2 | 12 UN | 29.20 |
| 16 | 2 | 58.3 | 44.00 | 43.90 | 48.7 | 49.0 | 58.0 | 57.7 | 12 UN | 44.10 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.