Standard: JG /T 5057.34 - 1995
Available sizes: 12 to 24 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 12 | 15.43 | 7.83 | 2.5 | 15 | 32 | 5.17 |
| 14 | 19.52 | 9.67 | 3 | 19 | 40 | 6.33 |
| 16 | 23.52 | 9.67 | 3 | 23 | 40 | 6.33 |
| 18 | 28.52 | 11.33 | 3 |
| 28 |
| 50 |
| 7.17 |
| 20 | 34.62 | 13 | 3 | 34 | 60 | 8 |
| 22 | 40.62 | 14.67 | 3 | 40 | 70 | 8.83 |
| 24 | 43.62 | 15.67 | 3 | 43 | 76 | 9.33 |
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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