Standard: GB /T 802.1 - 2008
Available sizes: M10 to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 29.16 | 30 | 32.95 | 35 | 2 | 1.5 | 16 | 14 | 28 | 19 |
| M12 | 3 | 35 | 36 | 39.55 | 40 | 2 | / | 19 | 17 | 34 | 22 |
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.
| M4 |
| 0.8 |
| 7.78 |
| 8 |
| 8.79 |
| 9 |
| / |
| / |
| 4 |
| 3.6 |
| 7.2 |
| 5.5 |
| M5 | 1.25 | 12.73 | 13 | 14.38 | 15 | 1 | / | 6 | 6.5 | 13 | 8 |
| M6 | 1.75 | 17.73 | 18 | 20.03 | 22 | 1.5 | 1.25 | 10 | 9 | 18 | 12 |
| M8 | 2 | 23.67 | 24 | 26.75 | 26 | 1.5 | / | 13 | 11.5 | 22 | 15 |
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