Standard: GB 559
Available sizes: 1 to 6 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | D3 | 14 | 0.6 | 6.2 | 14 | 4.90(0.50) | 10 | 16.2 | 1 | M8 | 6 |
| 2 | D3 | 18 | 0.6 | 9.4 | 19 | 7.84(0.80) | 14 |
| 21.9 |
| 1 |
| M12 |
| 8 |
| 3 | D3 | 22 | 1 | 11 | 23 | 12.25(1.25) | 17 | 26.5 | 1 | M14 | 9 |
| 4 | D3 | 28 | 1 | 13 | 28 | 19.60(2.00) | 21 | 32.8 | 1.5 | M16 | 12 |
| 5 | D3 | 35 | 1.5 | 16.4 | 36 | 31.36(3.20) | 27 | 41.6 | 1.5 | M20 | 15 |
| 6 | D3 | 44 | 1.5 | 22.6 | 45 | 49.00(5.00) | 33 | 51.5 | 2 | M27 | 18 |
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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