Standard: ZZB 1178
Available sizes: 10 to 8 (8 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 23 | 11.9 | 3.9 | 7.8 | 23.52 | 40 | 1.7 | 1.9 | 39 | 1.8 |
| 12 | 28 | 21.1 | 4.7 | 9.4 | 28.52 | 50 | 1.9 | 2.1 | 49 | 2 |
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.
| 14 | 31 | 29.5 | 5 | 10 | 31.62 | 56 | 1.9 | 2.1 | 54.8 | 2 |
| 3 | 4.3 | 0.19 | 1 | 2 | 4.6 | 9 | 0.45 | 0.55 | 8.42 | 0.5 |
| 4 | 6.4 | 0.32 | 1.3 | 2.6 | 6.76 | 12 | 0.45 | 0.55 | 11.3 | 0.5 |
| 5 | 10.5 | 2.04 | 2.1 | 4.2 | 10.93 | 21 | 0.9 | 1.1 | 20.16 | 1 |
| 6 | 15 | 5.5 | 3 | 5.9 | 15.43 | 28 | 1.4 | 1.6 | 27.16 | 1.5 |
| 8 | 19 | 7.8 | 3.3 | 6.5 | 19.52 | 34 | 1.4 | 1.6 | 33 | 1.5 |
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