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 | 3.2 | 6.88 | 15.57 | 25.25 | 22.75 |
| (Φ18) | 24.52 | 4.8 | 10.32 | 23.48 | 37.8 | 34.2 |
| (Φ22) | 36.62 | 7.2 | 15.48 | 35.38 | 58 | 52 |
| Φ16 | 20.52 | 4 | 8.6 |
| 19.48 |
| 31.8 |
| 28.2 |
| Φ20 | 30.62 | 6 | 12.9 | 29.38 | 47.5 | 42.5 |
| Φ24 | 39.62 | 7.8 | 16.77 | 38.38 | 62 | 56 |
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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