Standard: JIS B 1122
Available sizes: 2 to 3.5 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 4.5 | 1.00 | 1.42 | 1.6 | 6 | 4.1 | 1.7 | 1 | 2.6 | 1.8 | 0.8 |
| 2.5 | 6 | 1.15 | 1.73 | 2.15 | 8 | 5.5 | 2.3 |
| 2 |
| 3.9 |
| 2.45 |
| 1.1 |
| 3 | 8 | 1.83 | 2.43 | 2.75 | 11 | 7.4 | 2.9 | 2 | 4.6 | 3.05 | 1.5 |
| 3.5 | 10.5 | 2.26 | 2.86 | 3.7 | 14 | 9.8 | 3.9 | 3 | 6.3 | 4.1 | 1.9 |
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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