Standard: GB 835 - 1988
Available sizes: M1.6 to M4 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.4 | 4.82 | 0.1 | 8 | 7.78 | 0.2 | 5 | 2.8 |
| M2 | 0.5 | 6.78 | 0.1 | 11 | 10.73 | 0.3 | 7 | 4.2 |
| M2.5 | 0.8 | 9.78 | 0.2 | 16 | 15.73 | 0.5 | 10 | 7 |
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.
| M3 |
| 1.25 |
| 15.57 |
| 0.4 |
| 24 |
| 23.67 |
| 0.8 |
| 16 |
| 11.2 |
| M4 | 1.5 | 19.48 | 0.4 | 30 | 29.67 | 0.8 | 20 | 14 |
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