Standard: DL /T 1343 - 2014
Available sizes: A to D (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 3.6 | 5.8 | M16、M18 | 32 | 15 | 9 | 11.5 | 1.8 | 3.8 | 18 | 2 |
| B | 4.6 | 7.3 | M27、M30、M33、M36 | 52 | 18 | 11 | 14 | 2.3 | 4.8 | 36 | 2.5 |
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.
| C |
| 5.6 |
| 8.8 |
| M52、M56 |
| 74 |
| 21 |
| 13.5 |
| 16 |
| 2.8 |
| 5.8 |
| 56 |
| 3 |
| D | 5.6 | 8.8 | M60、M64、M72 | 82 | 21 | 13.5 | 16 | 2.8 | 5.8 | 64 | 3 |
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