Standard: JIS B 2351
Available sizes: 10 to 8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | L | 14.5 | 27 | 27 | 26 | 18 | M22×1.5 | 45.5 | 27 | G 1/2 A | 45.5 |
| 12 | L | 23 | 41 | 39 | 39 | 28 | M33×2 |
| 53 |
| 41 |
| G 1 A |
| 53 |
| 15 | L | 35.5 | 55 | 55 | 55 | 42 | M48×2 | 68.5 | 55 | G 1-1/2 A | 68.5 |
| 18 | S | 3.5 | 19 | 17 | 18 | 6 | M12×1.5 | 39 | 17 | G 1/4 A | 39 |
| 6 | L | 5.5 | 19 | 17 | 18 | 8 | M12×1.5 | 41.5 | 17 | G 1/4 A | 38.5 |
| 8 | L | 9 | 22 | 21 | 22 | 12 | M16×1.5 | 46 | 22 | G 3/8 A | 42.5 |
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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