Standard: JIS B 2301
Available sizes: 1 to 3/8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 113.03 | 4 | 8 | 127 | 110 | 11 | 28 | 6 | 133 | 40 | 114 |
| 1-1/4 | 163.83 | 4 | 8 | 182 | 160 | 11 | 33 |
| 7.5 |
| 189 |
| 44 |
| 165 |
| 1/2 | 47.803 | 2 | 5 | 56 | 44 | 11 | 18 | 3.5 | 60 | 22 | 49 |
| 1/4 | 20.955 | 2 | 4 | 27 | 18 | 14 | 11 | 2.5 | 30 | 15 | 22 |
| 1/8 | 13.157 | 2 | 3 | 19 | 12 | 19 | 8 | 2.5 | 22 | 11 | 14 |
| 3/4 | 75.184 | 2 | 6 | 86 | 72 | 11 | 23 | 4.5 | 91 | 30 | 76 |
| 3/8 | 33.249 | 2 | 5 | 41 | 30 | 11 | 15 | 3 | 44 | 19 | 34 |
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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