Standard: JIS B 2809
Available sizes: MR10 to MR8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MR10 | 24 | M12 | 27.5 | 53 | 15 | 20 | 10 | 30 | 28.5 | 8 | 14 |
| MR12 | 30 | M14 | 33.5 | 62 | 17 | 26 | 12.5 | 34 | 34.5 | 9.5 | 16 |
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.
| MR14 |
| 42 |
| M20 |
| 47 |
| 86 |
| 24.3 |
| 38 |
| 14.5 |
| 46 |
| 49 |
| 11.5 |
| 22.7 |
| MR16 | 53 | M22 | 57 | 98 | 26.3 | 49 | 16.5 | 53 | 59 | 13.5 | 24.7 |
| MR18 | 74 | M30 | 78.5 | 136 | 35.5 | 70 | 20.5 | 70 | 81.5 | 17.5 | 33.5 |
| MR20-22 | 83 | M33 | 87.5 | 150 | 38.5 | 79 | 22.5 | 78 | 90.5 | 19.5 | 36.5 |
| MR8 | 17 | M10 | 21.5 | 45 | 12.5 | 15 | 8 | 26 | 22.5 | 6 | 11.5 |
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