Standard: JG /T 5057.3 - 1995
Available sizes: M12 to M24 (7 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| M12 | 2.0 | 20.16 | 9.09 | 8.51 | 21 |
| M14 | 2.5 | 26.16 | 11.85 | 11.15 | 27 |
| M16 | 2.5 | 33 | 14.35 | 13.65 | 34 |
| M18 | 3 | 40 | 17.35 | 16.65 | 41 |
| M20 |
| 3.5 |
| 49 |
| 21.42 |
| 20.58 |
| 50 |
| M22 | 4 | 58.8 | 25.42 | 24.58 | 60 |
| M24 | 4.5 | 63.8 | 26.42 | 25.58 | 65 |
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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