Standard: GB /T 902.2
Available sizes: M5 to M8 (3 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 902.2(ID) |
| ISO | ISO 13918(ID) |
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M5 | 1 | 4 | 15 | 10 | 13 | 9 | L₂ + 2.8 |
| M6 | 1.25 | 6 | 25 |
| 14.6 |
| 18.5 |
| 15 |
| L₂ + 3.9 |
| M8 | 1.75 | 7 | 30 | 18 | 23 | 18 | L₂ + 4.2 |
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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