Standard: GOST 7817 - 1980
Available sizes: (14) to 8 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (14) | 3 | 5 | 35.8 | 24.948 | 25.015 | 2 | 25 | 15 | 32 | 25 | 25.002 |
| (18) | 4.5 | 8 | 67.4 | 43.938 | 44.018 | 3 | 44 |
| 26 |
| 60 |
| 44 |
| 44.002 |
| 10 | 2 | 4 | 24.5 | 16.957 | 17.012 | 1.5 | 17 | 10 | 22 | 17 | 17.001 |
| 12 | 2.5 | 4 | 30.1 | 20.948 | 21.015 | 1.5 | 21 | 13 | 27 | 21 | 21.002 |
| 16 | 3.5 | 6.3 | 45.9 | 31.938 | 32.018 | 2 | 32 | 19 | 41 | 32 | 32.002 |
| 20 | 5 | 8 | 78.6 | 49.938 | 50.018 | 3 | 50 | 30 | 70 | 50 | 50.002 |
| 6 | 1.25 | 2 | 13.2 | 8.964 | 9.01 | 1 | 9 | 5.5 | 12 | 9 | 9.001 |
| 8 | 1.75 | 3.2 | 18.9 | 12.957 | 13.012 | 1.25 | 13 | 8 | 17 | 13 | 13.001 |
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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