Standard: GB 804 - 1988
Available sizes: M10 to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 96.08 | 29.16 | 32.95 | 32.5 | 21.6 | 20 | 32 | 30 | 22 | 31.5 |
| M12 | 3.5 | 360.4 | 45 | 50.85 | 48.5 | 32.4 | 30 | 40 | 46 | 32 | 47.5 |
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.
| M16 | 4.5 | 999.7 | 63.8 | 72.09 | 65.6 | 45.4 | 42 | 63 | 65 | 44 | 64.4 |
| M20 | 5 | 1522 | 73.1 | 82.6 | 75.6 | 51.8 | 48 | 70 | 75 | 50 | 74.4 |
| M6 | 1.25 | 7.64 | 12.73 | 14.38 | 12.35 | 8.75 | 8 | 12 | 13 | 9.5 | 11.65 |
| M8 | 1.75 | 22.53 | 17.73 | 20.03 | 20.42 | 13 | 12 | 20 | 18 | 14 | 19.58 |
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