Standard: JB /T 7275 - 2014
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 | 22.033 | 24.8 | 6.015 | / | / | / | 32 | 6 | 5.985 | 30 | / |
| 12 | 28.033 | 31.3 | 8.018 | / | / | / | 40 | 8 | 7.982 | 38 | / |
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.
| 16 |
| 32.039 |
| 35.3 |
| 10.018 |
| / |
| / |
| / |
| 45 |
| 10 |
| 9.982 |
| 42 |
| / |
| 4 | 5.018 | / | / | 7 | 8.1 | M5 | 8 | / | / | 7 | 7 |
| 5 | 8.022 | 9 | 2.0125 | 10 | 11.5 | M8 | 12 | 2 | 1.9875 | 10 | 10 |
| 6 | 12.027 | 13.8 | 4.015 | 17 | 19.6 | M12 | 20 | 4 | 3.985 | 18 | 17 |
| 8 | 18.027 | 20.8 | 6.015 | / | / | / | 28 | 6 | 5.985 | 25 | / |
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