Standard: JIS B 2401
Available sizes: 001 to 010 (10 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 001 | 1.07 | 1.19 | 0.95 | 1.27 | 1.17 | 0.97 | 1.19 | 1.35 | 1.19 | 1.35 |
| 002 | 1.78 | 1.7 | 1.65 | 1.78 | 1.91 | 1.65 | 1.7 | 1.86 | 1.91 | 1.86 |
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.
| 003 | 2.90 | 1.7 | 2.77 | 1.78 | 3.03 | 2.77 | 1.7 | 1.86 | 3.03 | 1.86 |
| 004 | 4.47 | 1.7 | 4.32 | 1.78 | 4.6 | 4.34 | 1.7 | 1.86 | 4.62 | 1.86 |
| 005 | 6.07 | 1.7 | 5.91 | 1.78 | 6.2 | 5.94 | 1.7 | 1.86 | 6.23 | 1.86 |
| 006 | 9.25 | 1.7 | 9.07 | 1.78 | 9.38 | 9.12 | 1.7 | 1.86 | 9.43 | 1.86 |
| 007 | 12.42 | 1.7 | 12.21 | 1.78 | 12.55 | 12.29 | 1.7 | 1.86 | 12.63 | 1.86 |
| 008 | 15.6 | 1.7 | 15.37 | 1.78 | 15.83 | 15.37 | 1.7 | 1.86 | 15.83 | 1.86 |
| 009 | 18.77 | 1.7 | 18.51 | 1.78 | 19 | 18.54 | 1.7 | 1.86 | 19.03 | 1.86 |
| 010 | 21.95 | 1.7 | 21.67 | 1.78 | 22.18 | 21.72 | 1.7 | 1.86 | 22.23 | 1.86 |
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