Standard: GB /T 802.3 - 2009
Available sizes: M10 to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 3 | 17 | 22.7 | 46 | 39.55 | 2 | / | 35 | 24 | 34 | 36 |
| M4 | 0.8 | 3.75 | 4.7 | 11.8 | 8.79 | / | / | 8.64 |
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.
| 5 |
| 7.5 |
| 9 |
| M5 | 1.25 | 6.25 | 7.64 | 17.9 | 14.38 | 1 | / | 13.57 | 8 | 12.5 | 14 |
| M6 | 1.75 | 8.5 | 11.57 | 26 | 20.03 | 1.5 | 1.25 | 21.48 | 12 | 17 | 22 |
| M8 | 2 | 11.5 | 15.3 | 34.5 | 26.75 | 1.5 | / | 29.48 | 16 | 23 | 30 |
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