Standard: JIS B 1256
Available sizes: (Φ1.4) to Φ2 (8 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| (Φ1.4) | 2.2 | 0.3 | 0.34 | 2.35 | 4.3 | 4 | 0.26 |
| (Φ1.7) | 2.8 | 0.5 | 0.55 | 2.95 | 5 | 4.7 | 0.45 |
| (Φ2.2) | 4.8 | 0.8 | 0.9 | 5 | 9 | 8.65 | 0.7 |
| (Φ2.3) | 5.3 | 1 | 1.1 |
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.
| 5.5 |
| 10 |
| 9.65 |
| 0.9 |
| Φ1 | 1.3 | 0.3 | 0.34 | 1.45 | 2.8 | 2.55 | 0.26 |
| Φ1.2 | 1.7 | 0.3 | 0.34 | 1.85 | 3.8 | 3.5 | 0.26 |
| Φ1.6 | 2.5 | 0.5 | 0.55 | 2.65 | 4.6 | 4.3 | 0.45 |
| Φ2 | 3.7 | 0.5 | 0.55 | 3.9 | 7 | 6.65 | 0.45 |
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