Standard: GB 559
Available sizes: 1 to 5 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1 | OE2 | 1.5 | 20 | 4.90(0.50) | 12 | 11 | 0.043 | M12 | 21 |
| 2 | OE2 | 2 | 25 | 7.84(0.80) | 15 | 14 | 0.097 | M14 | 26.2 |
| 3 |
| OE2 |
| 2.5 |
| 32 |
| 12.25(1.25) |
| 19 |
| 18 |
| 0.191 |
| M18 |
| 33.6 |
| 4 | OE2 | 2.5 | 40 | 19.60(2.00) | 25 | 23 | 0.386 | M24 | 42 |
| 5 | OE2 | 3 | 51 | 31.36(3.20) | 31 | 29 | 0.757 | M30 | 53.6 |
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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