Standard: GB 2206 - 1991
Available sizes: 10 to 8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 14 | / | 10 | 20 | 8 | 13.989 | 13.973 | 5.7 | 5.5 | 14 | 3 |
| 12 | 18 | / | 11 | 25 | 12 | 17.989 | 17.973 |
| 6.8 |
| 6.6 |
| 18 |
| 5 |
| 14 | 22 | / | 11 | 32 | 12 | 21.987 | 21.967 | 6.8 | 6.6 | 22 | 5 |
| 16 | 28 | / | 15 | 40 | 16 | 27.987 | 27.967 | 9 | 9 | 28 | 7 |
| 18 | 42 | 16 | 20 | 60 | 24 | 41.984 | 41.961 | 13 | 13.5 | 42 | 10 |
| 20 | 54 | 18 | 26 | 80 | 32 | 53.981 | 53.954 | 17.5 | 17.5 | 54 | 14 |
| 8 | 10 | / | 8 | 16 | 8 | 9.991 | 9.978 | 4.6 | 4.5 | 10 | 3 |
Standard corrosion protection for indoor and mild outdoor environments.
Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)
High-performance coating for automotive, marine, and harsh environments.
Salt spray: 720–1500 hours | Recommended for grade 8.8+
Heavy-duty protection for structural and outdoor applications.
Salt spray: 500–1000 hours | Thread tolerance adjustment required
Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.
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.
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