Standard: JG /T 5057.8 - 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 | 2 | 12.4 | 3 | 30.5 | 14 | 2.1 | 15.7 | 27.6 | 22.58 | 17.7 | 13.73 |
| M14 | 2.5 | 15.9 | 3 | 39 | 18 | 2.7 | 20.2 |
| 35.9 |
| 29.56 |
| 23.2 |
| 17.73 |
| M16 | 2.5 | 19.5 | 4 | 47 | 22 | 3.3 | 24.4 | 43.8 | 37.29 | 28 | 21.67 |
| M18 | 3 | 24.1 | 4 | 57 | 27 | 3.9 | 30.4 | 53.8 | 45.2 | 34.6 | 26.67 |
| M20 | 3.5 | 29.5 | 5 | 70 | 33 | 4.5 | 36.4 | 65.6 | 55.37 | 41.2 | 32.61 |
| M22 | 4 | 33.5 | 5 | 83 | 39 | 5.1 | 42.4 | 77.6 | 66.44 | 47.8 | 38.61 |
| M24 | 4.5 | 37.4 | 5 | 90 | 42 | 5.4 | 45.6 | 83.6 | 70.02 | 51.4 | 41.61 |
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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