Standard: JB /T 1761 - 1991
Available sizes: M10 to M8 (7 sizes)
| Size | P | s_max | s_min | k_nominal |
|---|---|---|---|---|
| M10 | 14.5 | 22 | 1.5 | 2.53 |
| M12 | 20.5 | 28 | 1.5 | 4.43 |
| M14 | 27.5 | 36 | 2 | 8.47 |
| M16 | 36.5 | 46 | 2 | 11.92 |
| M20 | 48.5 | 60 | 2 | 18.38 |
| M24 | 56.5 | 70 | 2 | 21.04 |
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.
| M8 |
| 10.5 |
| 16 |
| 1.5 |
| 1.98 |
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