Standard: JG /T 5057.5 - 1995
Available sizes: M12 to M24 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 1.5 | 9.09 | 8.5 | 0.6 | 15.7 | / | 0.2 | 14 | 13.57 | 0.6 | 19.2 |
| M14 | 1.5 | 11.85 | 11.5 | 0.6 | 20.2 | / | 0.2 |
| 18 |
| 17.57 |
| 0.6 |
| 24.8 |
| M16 | 2 | 14.35 | 14 | 0.8 | 24.4 | (1.5) | 0.25 | 22 | 21.48 | 0.8 | 31.4 |
| M18 | 2 | 17.35 | 17 | 1.0 | 30.4 | / | 0.3 | 27 | 26.48 | 0.9 | 38 |
| M20 | 2 | 21.42 | 21 | 1.0 | 36.4 | / | 0.3 | 33 | 32.38 | 0.9 | 46.6 |
| M22 | 3 | 25.42 | 25 | 1.2 | 42.4 | / | 0.4 | 39 | 38.38 | 1.0 | 55.9 |
| M24 | 3 | 26.42 | 26 | 1.2 | 45.6 | / | 0.4 | 42 | 41.38 | 1.0 | 60.6 |
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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