Standard: BS 4895
Available sizes: 1.2 to 3 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.2 | 1.65 | 1.06 | 1.46 | 3.1 | 0.19 | 1.55 | 1.53 | 1.19 | 1.09 | 3.4 | 0.2 |
| 1.6 | 2.55 | 1.6 | 2.2 | 4.52 | 0.3 | 2.45 | 2.43 |
| 1.88 |
| 1.74 |
| 5 |
| 0.26 |
| 2 | 4.06 | 2.5 | 3.1 | 7.42 | 0.48 | 3.94 | 3.9 | 2.96 | 2.82 | 8 | 0.38 |
| 2.5 | 6.06 | 3.7 | 4.45 | 11 | 0.72 | 5.94 | 5.9 | 4.44 | 4.26 | 11.7 | 0.53 |
| 3 | 8.075 | 4.9 | 5.65 | 15 | 0.96 | 7.925 | 7.88 | 6 | 5.7 | 15.7 | 0.68 |
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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