Standard: JIS B 1180
Available sizes: (M3.5) to M6 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 1.5 | 6.4 | 17.59 | 0.15 | 11.2 | 4.5 | 1.5 | 14.47 | 17.77 | 0.6 | 14.63 |
| M1.6 | 0.4 | 1.4 | 4.18 | 0.1 | 2.6 | 1.2 | 0.4 |
| 2.95 |
| 4.32 |
| 0.25 |
| 3.07 |
| M2 | 0.5 | 2 | 5.88 | 0.15 | 3.6 | 1.5 | 0.5 | 4.45 | 6.01 | 0.4 | 4.57 |
| M2.5 | 0.7 | 2.8 | 7.5 | 0.15 | 4.7 | 2.1 | 0.7 | 5.74 | 7.66 | 0.4 | 5.88 |
| M3 | 1 | 4 | 10.89 | 0.15 | 6.8 | 3 | 1 | 8.74 | 11.05 | 0.5 | 8.88 |
| M4 | 2 | 8.8 | 22.78 | 0.15 | 15.7 | 6 | 2 | 19.15 | 23.36 | 0.6 | 19.64 |
| M5 | 2.5 | 11.5 | 29.56 | 0.2 | 20.2 | 7.5 | 2.5 | 24.85 | 30.14 | 0.8 | 25.34 |
| M6 | 2.5 | 12.5 | 32.95 | 0.2 | 22.4 | 7.5 | 2.5 | 27.7 | 33.53 | 0.8 | 28.19 |
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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