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 | D4 | 0.029 | 9 | 1 | 1 | 4.90(0.50) | 10 | 14 | 14.7 | 1.5 | 2.5×16 |
| 2 | D4 | 0.073 | 12 | 1 | 1 | 7.84(0.80) | 14 | 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.
| 18.9 |
| 1.5 |
| 3×25 |
| 3 | D4 | 0.151 | 15 | 1 | 1 | 12.25(1.25) | 17 | 22 | 23.1 | 1.5 | 4×25 |
| 4 | D4 | 0.294 | 19 | 1.5 | 1.5 | 19.60(2.00) | 21 | 28 | 29.4 | 2 | 5×30 |
| 5 | D4 | 0.564 | 24 | 1.5 | 1.5 | 31.36(3.20) | 27 | 35 | 36.8 | 2 | 6×35 |
| 6 | D4 | 1.07 | 29 | 2 | 2 | 49.00(5.00) | 33 | 44 | 46.2 | 2 | 6×45 |
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