Standard: BS 4620
Available sizes: (Φ3.5) to Φ3 (7 sizes)
| Size | P | s_max | s_min | k_nominal |
|---|---|---|---|---|
| (Φ3.5) | 10.11 | 9.89 | 20 | 2.5 |
| Φ1 | 1.27 | 1.13 | 2.4 | 0.3 |
| Φ1.2 | 2.07 | 1.93 | 4 | 0.5 |
| Φ1.6 | 3.07 | 2.93 | 6 | 0.75 |
| Φ2 | 4.09 | 3.91 | 8 | 1 |
| Φ2.5 | 6.09 | 5.91 | 12 | 1.5 |
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.
| Φ3 |
| 8.11 |
| 7.89 |
| 16 |
| 2 |
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