Standard: GB /T 6560 - 1986
Available sizes: M2 to M3 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.45 | 1 | 4 | 5 | 4.7 | 0.9 | 12 | 1.96 | 0.1 | 3.1 | 2.1 |
| M2.5 | 0.7 | 2 | 6.5 | 8 | 7.64 | 1.4 | 24 |
| 2.92 |
| 0.2 |
| 4.7 |
| 3.1 |
| M3 | 1 | 3 | 10 | 12 | 11.57 | 2 | 35 | 4.3 | 0.25 | 6.8 | 4.6 |
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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