Standard: JIS B 1256
Available sizes: (Φ14) to Φ8 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| (Φ14) | 26 | 4.5 | 5 | 26.8 | 44 | 43 | 4 |
| (Φ18) | 36 | 6 | 6.7 | 37 | 60 | 58.8 | 5.3 |
| Φ10 | 18 | 3.2 | 3.6 | 18.7 | 30 | 29.2 | 2.8 |
| Φ12 | 22 | 3.2 | 3.6 |
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.
| 22.8 |
| 37 |
| 36 |
| 2.8 |
| Φ16 | 33 | 4.5 | 5 | 34 | 56 | 54.8 | 4 |
| Φ6 | 9 | 1.6 | 1.8 | 9.6 | 17 | 16.3 | 1.4 |
| Φ8 | 14 | 2.3 | 2.6 | 14.7 | 24 | 23.2 | 2 |
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