Standard: BS 57
Available sizes: 10 to 8 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 10 | 0.161 | 0.153 | 0.143 | 0.282 | 0.277 | 0.098 | 0.33 | 0.108 |
| 2 | 0.142 | 0.135 | 0.125 | 0.248 | 0.243 | 0.084 | 0.29 | 0.094 |
| 4 | 0.087 | 0.082 | 0.075 | 0.152 |
| 0.149 |
| 0.051 |
| 0.18 |
| 0.058 |
| 6 | 0.051 | 0.049 | 0.044 | 0.090 | 0.088 | / | 0.10 | / |
| 8 | 0.209 | 0.188 | 0.178 | 0.365 | 0.360 | 0.129 | 0.42 | 0.139 |
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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