Standard: JG /T 5057.4 - 1995
Available sizes: M12 to M24 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M12 | 2 | 8.95 | 8.05 | 14.43 | 13.57 | 23.16 | 26.17 | 8.5 | 24 |
| M14 | 2.5 | 12.4 | 10.6 | 18.43 | 17.57 | 29.16 | 32.95 | 11.5 | 30 |
| M16 |
| 2.5 |
| 14.9 |
| 13.1 |
| 22.52 |
| 21.48 |
| 35 |
| 39.55 |
| 14 |
| 36 |
| M18 | 3 | 17.9 | 16.1 | 27.84 | 26.48 | 45 | 50.85 | 17 | 46 |
| M20 | 3.5 | 22.05 | 19.95 | 33.84 | 32.38 | 53.8 | 60.79 | 21 | 55 |
| M22 | 4 | 26.05 | 23.95 | 39.84 | 38.38 | 63.1 | 72.02 | 25 | 65 |
| M24 | 5 | 27.05 | 24.95 | 42.84 | 41.38 | 68.1 | 76.95 | 26 | 70 |
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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