Standard: BS 4168
Available sizes: M1.6 to M3 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.4 | 1.52 | 1.545 | 3.62 | 2 | 16 | 3.8 | 2 | 1.86 | 3.98 | 1.86 |
| M2 | 0.5 | 2.52 | 2.56 | 5.32 | 3 | 18 | 5.5 |
| 3 |
| 2.86 |
| 5.68 |
| 2.86 |
| M2.5 | 0.8 | 4.02 | 4.095 | 8.28 | 5 | 22 | 8.5 | 5 | 4.82 | 8.72 | 4.82 |
| M3 | 1.25 | 6.02 | 6.095 | 12.73 | 8 | 28 | 13 | 8 | 7.64 | 13.27 | 7.78 |
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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