Standard: JB /T 7755
Available sizes: M10 to M8 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 10.115 | 12 | 11.43 | 10 | 14 | / | 10.025 | 13.57 |
| M5 | 0.75 | 3.08 | 3.5 | 3.44 | 3 | 3 | 3 | 3.02 | 2.75 |
| M6 |
| 1.5 |
| 6.095 |
| 8 |
| 6.86 |
| 6 |
| 8 |
| 6 |
| 6.02 |
| 7.64 |
| M8 | 1.5 | 8.115 | 10 | 9.15 | 8 | 10 | 8 | 8.025 | 9.64 |
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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