Standard: BS 4929
Available sizes: M3 to M6 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M3 | 0.7 | 4.8 | 2.4 | 7 | 6.85 | 7.74 | 6 | 8.1 |
| M4 | 1 | 6.6 | 3.6 | 10 | 9.78 | 11.05 | 7.8 | 11.5 |
| M5 | 1.5 | 11 | 6 | 17 | 16.73 |
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.
| 18.9 |
| 13 |
| 19.6 |
| M6 | 2 | 15.4 | 8.4 | 22 | 21.67 | 24.49 | 18.2 | 25.4 |
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