Standard: JIS B 1213
Available sizes: Φ3 to Φ4 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Φ3 | 3.64 | 1.8 | 12.3 | 6.8 | 1.9 | 3.46 | 7 | 1.8 | 0.18 | 7.3 | 2.1 |
| Φ3.5 | 5.2 | 2.7 | 17.5 | 9.3 | 2.8 | 4.95 | 9.5 | 2.7 | 0.25 | 9.8 | 3 |
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.
| Φ4 |
| 6.24 |
| 3.2 |
| 21 |
| 10.5 |
| 3.3 |
| 5.94 |
| 10.8 |
| 3.1 |
| 0.3 |
| 11.2 |
| 3.6 |
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