Standard: JB /T 8004.2
Available sizes: M10 to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 37 | 5 | 6.6 | 29.67 | 34.6 | 32 | 32 | 32 | 21 | 30 | 29 |
| M12 | 56 | 7 | 9.8 | 45.38 | 53.1 | 48 | 40 | 48 | 31 | 46 | 44 |
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.
| M16 |
| 78 |
| 9 |
| 16 |
| 64.26 |
| 75 |
| 65 |
| 63 |
| 68 |
| 43 |
| 65 |
| 62 |
| M20 | 92 | 10 | 20 | 74.26 | 86.5 | 75 | 70 | 78 | 50 | 75 | 72 |
| M6 | 17 | 3 | 4 | 12.73 | 14.2 | 12 | 12 | 14 | 8.4 | 13 | 13.5 |
| M8 | 24 | 4 | 5 | 17.73 | 19.85 | 20 | 20 | 20 | 13 | 18 | 17 |
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