Standard: GB /T 9160.2
Available sizes: 10 to 28 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | MB 01 | 11 | 3 | 25 | 3 | MBA 01 | 12 | 3 | 1 | 17 | 10.5 |
| 12 | MB 03 | 11 | 4 | 32 | 4 | MBA 03 | 17 | 4 |
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.
| 1 |
| 24 |
| 15.5 |
| 15 | — | 11 | 4 | 38 | 4 | MBA/22 | 22 | 4 | 1 | 28 | 20.5 |
| 17 | — | 13 | 4 | 46 | 5 | MBA/28 | 28 | 5 | 1.25 | 36 | 26 |
| 20 | — | 13 | 4 | 52 | 6 | MBA/32 | 32 | 5 | 1.25 | 40 | 29.5 |
| 22 | MB 08 | 13 | 5 | 62 | 6 | MBA 08 | 40 | 6 | 1.25 | 50 | 37.5 |
| 25 | MB 10 | 13 | 5 | 74 | 6 | MBA 10 | 50 | 6 | 1.25 | 61 | 47.5 |
| 28 | MB 11 | 17 | 5 | 81 | 8 | MBA 11 | 55 | 7 | 1.5 | 67 | 52.5 |
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