Standard: JIS B 1180
Available sizes: (M3.5) to M8 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 0.75 | 7.8 | 9.2 | 3.2 | 3.35 | / | 4.5 | 8 | 7.8 | 4.4 | 3.05 |
| (M4.5) | 1.25 | 12.6 | 15 | 5.5 | 5.65 | 1 | 8 |
| 13 |
| 12.75 |
| 7.85 |
| 5.35 |
| (M7) | 2.5 | 29 | 34.6 | 13 | 13.2 | 1.5 | 20 | 30 | 29.65 | 19.8 | 12.8 |
| M3 | 0.6 | 5.8 | 6.9 | 2.4 | 2.5 | / | 3.5 | 6 | 5.8 | 3.4 | 2.3 |
| M4 | 1 | 9.8 | 11.5 | 4 | 4.15 | / | 6 | 10 | 9.8 | 5.9 | 3.85 |
| M5 | 1.75 | 18 | 21.9 | 8 | 8.2 | 1.25 | 12 | 19 | 18.65 | 11.8 | 7.8 |
| M6 | 2 | 23 | 27.7 | 10 | 10.2 | 1.5 | 16 | 24 | 23.65 | 15.8 | 9.8 |
| M8 | 3 | 34 | 41.6 | 15 | 15.2 | 2 | 24 | 36 | 35.6 | 23.8 | 14.8 |
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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