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 | 36 | 36 | G 1/2 A | 26.9 | M26×1.5 | 14 | 14 | 14 | M22×1.5 | 26.9 |
| 12 | L | 43 | 43 | G 1 A | 39.9 | M36×2 | 23 |
| 18 |
| 18 |
| M33×2 |
| 39.9 |
| 15 | L | 52 | 52 | G 1-1/2 A | 54.9 | M52×2 | 36 | 22 | 22 | M48×2 | 54.9 |
| 18 | S | 32 | 32 | G 1/4 A | 16.9 | M14×1.5 | 4 | 12 | 12 | M12×1.5 | 18.9 |
| 6 | L | 29 | 29 | G 1/4 A | 16.9 | M14×1.5 | 6 | 12 | 12 | M12×1.5 | 18.9 |
| 8 | L | 31.5 | 31.5 | G 3/8 A | 21.9 | M18×1.5 | 9 | 12 | 12 | M16×1.5 | 21.9 |
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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