Standard: Q 438
Available sizes: 10 to 8 (7 sizes)
| Size | P | s_max | s_min | k_nominal |
|---|---|---|---|---|
| 10 | 18.0 | 18.43 | 1.6 | 8 |
| 12 | 22.5 | 23.02 | 2.0 | 10 |
| 14 | 26.5 | 27.02 | 2.0 | 10 |
| 16 | 28.5 | 29.02 | 2.0 | 10 |
| 18 | 32.5 | 33.12 | 2.0 | 10 |
| 7 | 9.0 | 9.22 | 0.8 | 4 |
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.
| 8 |
| 13.5 |
| 13.93 |
| 1.0 |
| 6 |
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