Square Nuts-Product Grade C
DIN 557 - 1985 方螺母 C级
See all versions and complete specifications: Square Nuts-Product Grade C — Full Specification Page
| Standard Body | Standard Number |
|---|---|
| DIN | DIN 557 |
| UNI | UNI 5597 |
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M5 | 1 | 2.77 | 5.6 | 4.4 | 8.7 | 14.1 | 10 | 9.64 | 5 | 3.1 |
| M6 | 1.5 | 10.7 | 8.75 | 7.25 | 14.5 | 22.6 | 16 | 15.57 | 8 | 5.1 |
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.
| M8 | 1.75 | 16.3 | 10.75 | 9.25 | 16.5 | 25.4 | 18 | 17.57 | 10 | 6.4 |
| M10 | 2.5 | 73.5 | 16.9 | 15.1 | 27.7 | 42.4 | 30 | 29.16 | 16 | 10.6 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.