Standard: BS 4320
Available sizes: (M14) to M8 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (M14) | 30 | 50 | 48.8 | 30.6 | 30 | 4.6 | 3.4 | 50 | 4 |
| (M7) | 14 | 24 | 23.2 | 14.5 | 14 | 2.8 | 2.2 | 24 | 2.5 |
| M10 |
| 22 |
| 37 |
| 35.8 |
| 22.6 |
| 22 |
| 3.6 |
| 2.4 |
| 37 |
| 3.0 |
| M12 | 26 | 44 | 42.8 | 26.6 | 26 | 4.6 | 3.4 | 44 | 4 |
| M5 | 6.6 | 12.5 | 11.7 | 7.0 | 6.6 | 1.9 | 1.3 | 12.5 | 1.6 |
| M6 | 9 | 17 | 16.2 | 9.4 | 9.0 | 1.9 | 1.3 | 17 | 1.6 |
| M8 | 18 | 30 | 29.2 | 18.5 | 18 | 3.6 | 2.4 | 30 | 3.0 |
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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