Standard: JB /T 6545 - 2007
Available sizes: (M14) to M8 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 23.7 | 66.72 | 22 | 20.7 | 22 | 31.4 | 34 | 33 | 37.29 | 12.1 |
| M10 | 15.1 | 16.5 | 14.1 | 13.4 | 14 | 19.6 | 21 | 20.67 | 23.35 | 7.7 |
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.
| M12 | 19.5 | 31.53 | 18 | 17.3 | 18 | 24.8 | 27 | 26.16 | 29.56 | 9.2 |
| M8 | 10.8 | 7.65 | 11 | 9.94 | 10 | 14.6 | 16 | 15.73 | 17.77 | 5.5 |
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