Standard: BS 4620
Available sizes: (Φ14) to Φ24 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| (Φ14) | 16.43 | 11 | 10 | 15.57 | 26.25 | 23.75 |
| (Φ18) | 24.52 | 17.5 | 16 | 23.48 | 41.8 | 38.2 |
| (Φ22) | 36.62 | 25.5 | 23 | 35.38 | 61 | 55 |
| Φ16 | 20.52 | 14.5 | 13 | 19.48 | 33.8 | 30.2 |
| Φ20 |
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.
| 30.62 |
| 21 |
| 19 |
| 29.38 |
| 50.5 |
| 45.5 |
| Φ24 | 39.62 | 27.5 | 25 | 38.38 | 65 | 59 |
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