Standard: JIS B 1251
Available sizes: (Φ14) to Φ8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| (Φ14) | 28.7 | 46.7 | 16.6 | 27.5 | 8.6 | 8.3 |
| (Φ7) | 10.7 | 18.8 | 6 | 10.2 | 3.9 | 3 |
| Φ10 | 19 | 31.4 | 10.8 | 18.2 | 5.9 | 5.4 |
| Φ12 | 23.5 | 38.3 | 13.6 | 22.5 |
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.
| 7.1 |
| 6.8 |
| Φ6 | 7.5 | 13.4 | 4 | 7.1 | 2.8 | 2 |
| Φ8 | 14.8 | 24.7 | 8.4 | 14.2 | 4.8 | 4.2 |
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