Standard: JIS B 1188
Available sizes: (M3.5) to M3 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 14 | 1.75 | 16.6 | 15.5 | 15.1 | 13.2 | 5.4 | 1.45 | 17 | 5 | 1.75 |
| M2 | 4.5 | 0.55 | 6.15 | 5 | 4.7 | 4.1 | 1.8 |
| 0.45 |
| 6.5 |
| 1.6 |
| 0.55 |
| M2.5 | 6 | 0.55 | 8.65 | 7 | 6.65 | 5.5 | 2.45 | 0.45 | 9 | 2.15 | 0.55 |
| M3 | 9 | 1.1 | 9.65 | 10 | 9.65 | 8.4 | 3.45 | 0.9 | 10 | 3.15 | 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.
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