Standard: ISO 464
Available sizes: 30 to 42 (7 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 305 |
| ISO | ISO 464 |
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 30 | 34.80 | 0.75 | 3 | 30.30 | 30 | 0.85 |
| 32 | 39.80 | 0.75 | 3 | 35.30 | 35 |
| 0.85 |
| 34 | 42.80 | 0.75 | 3 | 38.30 | 38 | 0.85 |
| 37 | 46.80 | 0.75 | 4 | 42.30 | 41.9 | 0.85 |
| 39 | 49.80 | 0.75 | 4 | 45.30 | 44.9 | 0.85 |
| 40 | 57.80 | 0.75 | 4 | 53.30 | 52.9 | 0.85 |
| 42 | 60.80 | 0.75 | 4 | 56.30 | 55.7 | 0.85 |
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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