Standard: JIS B 1554
Available sizes: 44 to 80 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 44 | 4 | 12 | 20 | 24 | 12 | 25.5 | AN52，AN56 |
| 52 | 5 | 12 | 20 | 24 | 15 | 31 | AN64 |
| 60 | 5 | 14 | 25 | 32 | 15 | 40 | AN76 |
| 64 |
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.
| 5 |
| 18 |
| 30 |
| 36 |
| 15 |
| 43 |
| AN88，AN92 |
| 68 | 5 | 18 | 30 | 40 | 15 | 45 | AN100 |
| 76 | 7 | 22 | 40 | 45 | 21 | 54 | AN112，AN114，AN120 |
| 80 | 7 | 22 | 40 | 50 | 21 | 61 | AN126 |
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