Standard: JB /T 8004.5 - 1999
Available sizes: M3 to M8 (5 sizes)
| Size | P | k_max | s_max | s_min | ds_min | k_nominal |
|---|---|---|---|---|---|---|
| M3 | 18 | 6 | 10 | 6 | 2 | 10 |
| M4 | 25 | 8 | 12 | 8 | 4 | 14 |
| M5 | 35 | 12 | 20 | 14 | 5 | 20 |
| M6 | 50 | 15 | 25 | 20 | 8 | 25 |
| M8 |
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.
| 60 |
| 15 |
| 30 |
| 25 |
| 10 |
| 30 |
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