Standard: JIS B 2351
Available sizes: 4 to 8 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | LL | 4 | 8.5 | 5 | 5.14 | M10×1 | 8 | / | 6.5 | 5.5 | 5.215 |
| 5 | LL | 4 | 10.5 | 8 | 8.15 | M12×1 | 9 | / | 9.5 | 5.5 | 8.24 |
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.
| 6 |
| L |
| 5.5 |
| 24 |
| 18 |
| 18.15 |
| M26×1.5 |
| 12 |
| / |
| 20.3 |
| 7.5 |
| 18.26 |
| 8 | L | 6 | 33 | 28 | 28.16 | M36×2 | 14 | / | 30.3 | 7.5 | 28.29 |
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