Standard: GB /T 6177 - 1986
Available sizes: M10 to M8 (4 sizes)
| Standard Body | Standard Number |
|---|---|
| EN | EN 1661 |
| GB | GB /T 6177.1 |
| NF | NF E 25-406 |
| DIN | DIN EN 1661 |
| ISO | ISO 4161 |
| ANSI | ANSI/ASME B 18.2.4.4M |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 30 | 11.1 | 42.8 | 39.9 | 3 | 21.6 | 20 | 18.9 | 20.0 | 32.95 |
| M5 | 1 | 10 | 3.1 | 14.2 | 12.2 | 1.1 | 6.75 | 6 |
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.
| 5.7 |
| 6.00 |
| 11.05 |
| M6 | 1.5 | 15 | 5.5 | 21.8 | 19.6 | 1.5 | 10.8 | 10 | 9.6 | 10.0 | 16.64 |
| M8 | 2 | 21 | 7.8 | 29.9 | 27.6 | 2.1 | 15.1 | 14 | 13.3 | 14.0 | 23.36 |
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