Standard: JIS B 1122
Available sizes: 2 to 3.5 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 5.3 | 0.95 | 0.4 | 0.3 | 4.9 | 1 | 2.5 | 1.32 | 0.6 | 1 |
| 2.5 | 7.3 | 1.30 | 0.55 | 0.4 | 6.8 | 1.5 | 4.0 | 1.83 | 0.85 |
| 2 |
| 3 | 9.3 | 1.99 | 0.75 | 0.5 | 8.7 | 1.9 | 4.7 | 2.53 | 1.05 | 2 |
| 3.5 | 12.4 | 2.31 | 1.15 | 0.7 | 11.7 | 2.4 | 6.3 | 2.86 | 1.45 | 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.
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