Standard: JIS B 1301
Available sizes: (3) to 2.5 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (3) | 5 | 15.7 | 0.25~0.40 | 6.5 | 6.41 | 4.97 | 16 | 5.4 | 5 | 15.82 | 5.2 |
| 1 | 1.5 | / | 0.16~0.25 | 2.6 | 2.54 | 1.475 | 7 |
| 2.2 |
| 2 |
| 6.85 |
| 2.1 |
| 1.5 | 2 | / | 0.16~0.25 | 3.7 | 3.625 | 1.975 | 10 | 3.1 | 2.9 | 9.85 | 3 |
| 2 | 3 | 15.7 | 0.16~0.25 | 6.5 | 6.41 | 2.975 | 16 | 5.4 | 5 | 15.82 | 5.2 |
| 2.5 | 4 | 15.7 | 0.25~0.40 | 6.5 | 6.41 | 3.97 | 16 | 5.4 | 5 | 15.82 | 5.2 |
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.
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