Standard: BS 4190
Available sizes: M10 to M8 (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 1.78 | 31 | 36.9 | 22.84 | 21.16 | 14.9 | 13.1 | 32 | 35.03 |
| M12 | 3 | 2.28 | 40 | 47.3 | 27.84 | 26.16 | 17.9 | 16.1 | 41 |
| 45.2 |
| M16 | 3.5 | 2.28 | 45 | 53.1 | 30.84 | 29.16 | 20.05 | 17.95 | 46 | 50.85 |
| M5 | 1 | 0.4 | 9.64 | 11.5 | 6.48 | 5.52 | 4.38 | 3.63 | 10 | 10.89 |
| M6 | 1.5 | 0.8 | 16.57 | 19.6 | 10.58 | 9.42 | 7.45 | 6.55 | 17 | 18.72 |
| M8 | 2 | 1.25 | 23.16 | 27.7 | 16.7 | 15.3 | 10.45 | 9.55 | 24 | 26.17 |
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.
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