Standard: JB /T 8004.1 - 1999
Available sizes: M10 to M8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M10 | 3 | 36 | 35.38 | 1.5 | 44 | 34 | 38 | 41.6 |
| M12 | 4 | 55 | 54.26 | 1.5 | 66 | 53 | 55 | 63.5 |
| M16 | 5 | 75 | 74.26 | 1.5 | 92 | 72 | 75 | 86.5 |
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.
| M5 |
| 1 |
| 10 |
| 9.78 |
| — |
| 12.5 |
| 9.5 |
| 10 |
| 11.5 |
| M6 | 1.5 | 16 | 15.73 | 1 | 21 | 16.5 | 16 | 17.59 |
| M8 | 2 | 24 | 23.67 | 1.5 | 30 | 23 | 25 | 27.7 |
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