Standard: BS 4933 - 1973
Available sizes: M10 to M8 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M10 | 3 | 40.8 | 21.3 | 24.84 | 23.16 | 24.84 | 23.16 | 48 | 20 |
| M5 | 1 | 10.2 | 5.75 | 6.48 | 5.52 | 6.48 | 5.52 | 12 | 5 |
| M6 | 1.5 | 17 |
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.
| 9.4 |
| 10.58 |
| 9.42 |
| 10.58 |
| 9.42 |
| 20 |
| 8.5 |
| M8 | 2 | 27.2 | 14.1 | 16.7 | 15.3 | 16.7 | 15.3 | 32 | 13 |
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