Standard: GB /T 883 - 1986
Available sizes: (13) to 8 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (13) | 18.043 | 32 | 4 | 18 | 12 | 4*32 | 50.77 | 11.57 | 0.5 |
| (15) | 22.052 | 38 | 5 | 22 | 12 | 5*40 | 69.35 | 11.57 | 1 |
| (9) | 12.043 | 25 | 3 | 12 | 10 |
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.
| 3*25 |
| 29.11 |
| 9.64 |
| 0.5 |
| 10 | 14.043 | 28 | 4 | 14 | 12 | 4*28 | 42.54 | 11.57 | 0.5 |
| 12 | 16.043 | 30 | 4 | 16 | 12 | 4*32 | 46.66 | 11.57 | 0.5 |
| 14 | 20.052 | 35 | 4 | 20 | 12 | 4*35 | 59.91 | 11.57 | 0.5 |
| 8 | 9.036 | 22 | 3 | 9 | 10 | 3*22 | 24.33 | 9.64 | 0.5 |
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