Standard: JG /T 163 - 2013
Available sizes: 12 to 22 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 12 | ≤400级 | 28 | 32 | 22 | 21 | 21.5 | 32 |
| 14 | ≤400级 | 36 | 41 | 28 | 27 | 27.5 | 41 |
| 16 | ≤400级 | 44 | 49 | 34 | 32.5 | 33 | 49 |
| 18 | ≤400级 | 56 | 62 | 43 | 41.5 | 42 | 62 |
| 20 | ≤400级 | 72 | 78 | 54 | 53 | 53.5 | 78 |
| 22 | ≤400级 | — | 106 | — | 74 | 74 | 106 |
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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