Standard: GOST 5918 - 1973
Available sizes: M10 to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 6 | 25 | 16.4 | 25.3 | 1.5 | 27 | 18 | 19.4 | 22.4 | 29.6 |
| M4 | 0.8 | 6 | / | 4.7 | 7.2 | / | 8 |
| 5 |
| 5.75 |
| 6.7 |
| 8.6 |
| M5 | 1.25 | 6 | / | 6.8 | 11.7 | 1 | 13 | 8 | 8.75 | 9.8 | 14.2 |
| M6 | 1.5 | 6 | / | 8.4 | 15.5 | 1.25 | 17 | 10 | 10.8 | 12.4 | 18.7 |
| M8 | 1.75 | 6 | 16 | 10.8 | 17.2 | 1.25 | 19 | 12 | 13 | 15.8 | 20.9 |
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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