Standard: JIS B 1220
Available sizes: M16 to M30 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M16 | 2.5 | 450 | 460 | 16.2 | 16.07 | 62 | 16.33 | 54 |
| M18 | 2.5 | 550 | 560 | 20.2 | 20.07 | 74 | 20.33 | 66 |
| M20 | 3 | 675 | 685 | 24.85 |
| 24.69 |
| 91 |
| 25 |
| 81 |
| M22 | 3.5 | 825 | 835 | 30.51 | 30.34 | 109 | 30.67 | 99 |
| M24 | 4 | 975 | 985 | 36.17 | 35.99 | 130 | 36.34 | 117 |
| M27 | 4.5 | 1125 | 1145 | 41.83 | 41.64 | 148 | 42.01 | 135 |
| M30 | 5 | 1200 | 1220 | 44.48 | 44.28 | 157 | 44.68 | 144 |
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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