Standard: JIS B 1220
Available sizes: M24 to M39 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M24 | 2(3) | 675 | 685 | 27 | 26.7 | 91 | 27.3 | 81 |
| M27 | 2(3.5) | 825 | 835 | 33 | 32.7 | 109 | 33.3 | 99 |
| M30 | 3(4) | 975 | 985 | 39 |
| 38.6 |
| 130 |
| 39.5 |
| 117 |
| M33 | 4(4.5) | 1125 | 1145 | 45 | 44.5 | 148 | 45.5 | 135 |
| M36 | 4 | 1300 | 1320 | 52 | 51.5 | 169 | 52.5 | 156 |
| M39 | 4 | 1400 | 1420 | 56 | 55.5 | 181 | 56.5 | 168 |
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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