Standard: GB 559
Available sizes: 1 to 6 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1 | O2 | 1 | 14 | 4.90(0.50) | 11 | 10 | 0.028 | M10 | 14.7 |
| 2 | O2 | 2 | 18 | 7.84(0.80) | 14 | 13 | 0.062 | M14 | 18.9 |
| 3 |
| O2 |
| 2.5 |
| 22 |
| 12.25(1.25) |
| 18 |
| 16 |
| 0.124 |
| M18 |
| 23.1 |
| 4 | O2 | 2.5 | 28 | 19.60(2.00) | 22 | 20 | 0.245 | M22 | 29.4 |
| 5 | O2 | 2.5 | 35 | 31.36(3.20) | 28 | 25 | 0.465 | M27 | 36.8 |
| 6 | O2 | 3 | 44 | 49.00(5.00) | 35 | 32 | 0.958 | M33 | 46.2 |
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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