Standard: BS 4395
Available sizes: (M12) to M22 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M12) | 2 | 14.45 | 29.30 | 27.00 | 27 | 26.16 | 0.4 | 15.55 | 31.20 | 24.91 |
| M16 | 2.5 | 18.35 | 39.55 | 36.00 | 36 | 35 | 0.4 | 19.65 | 41.60 | 33.75 |
| M20 | 3 | 23.35 |
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.
| 50.85 |
| 46.00 |
| 46 |
| 45 |
| 0.5 |
| 24.65 |
| 53.10 |
| 43.75 |
| M22 | 4 | 30.20 | 66.44 | 60.00 | 60 | 58.8 | 0.5 | 31.80 | 69.30 | 57.75 |
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