Standard: JB /T 6686 - 1993
Available sizes: (M14) to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 3 | 25.24 | 25.56 | 37.48 | 24 | 7.98 | 7.35 | 27.7 | 25.4 | 38.1 | 23.79 |
| M10 | 2 | 15.77 | 16.03 | 23.28 | 16 | 5.94 | 5.58 | 19.6 | 15.9 | 23.8 | 15.82 |
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 | 2.5 | 18.84 | 19.16 | 28.08 | 20 | 6.82 | 6.46 | 21.9 | 19 | 28.6 | 19.79 |
| M6 | 1.25 | 7.89 | 8.11 | 12.17 | 8 | 2.14 | 1.89 | 9.2 | 8 | 12.6 | 7.85 |
| M8 | 1.75 | 12.57 | 12.83 | 18.48 | 12 | 4.35 | 4.05 | 13.8 | 12.7 | 19 | 11.82 |
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