Standard: BS 4183
Available sizes: (M1.4) to M2 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M1.4) | 4 | 0.7 | 1 | 0.1 | 17 | 3.7 | 1.5 | 0.8 | 0.66 | 1.36 | 0.9 |
| M1 | 2.3 | 0.35 | 0.49 | 0.1 | / | 2.05 | 0.8 |
| 0.5 |
| 0.36 |
| 0.66 |
| 0.5 |
| M1.2 | 3 | 0.45 | 0.65 | 0.1 | 15 | 2.75 | 1 | 0.6 | 0.46 | 0.86 | 0.7 |
| M1.6 | 5.5 | 0.9 | 1.3 | 0.1 | 19 | 5.2 | 2 | 1 | 0.86 | 1.86 | 1 |
| M2 | 7 | 1.2 | 1.6 | 0.2 | 22 | 6.64 | 2.6 | 1.2 | 1.06 | 2.46 | 1.4 |
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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