Standard: BS 4168
Available sizes: 10 to 8 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 2 | 13.73 | 14 | 22.40 | 21.60 | 19.980 | 19.928 | 30.33 | 29.67 | M16 | 30 |
| 12 | 2.5 | 15.73 | 16 | 27.40 | 26.60 | 23.98 | 23.928 |
| 36.39 |
| 35.61 |
| M20 |
| 36 |
| 6 | 1 | 5.32 | 5.5 | 11.25 | 10.75 | 7.987 | 7.951 | 13.27 | 12.73 | M6 | 13 |
| 8 | 1.5 | 8.78 | 9 | 16.40 | 15.60 | 11.984 | 11.941 | 18.27 | 17.73 | M10 | 18 |
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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