Standard: YJT 5002
Available sizes: 1/2 to 7/16 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 1/2 | 24 | 10 | 7.5 ~ 7.6 | UNC | 8 | 1 | 13 |
| 1/4 | — | 15 | 11.2 ~ 11.4 | Whitworth | 12 | 1.5 | 18 |
| 3/8 | — | 22 | 19.2 ~ 19.4 | Whitworth | 20 | 1.5 | 26 |
| 4# | 16 | 18 | 13.2 ~ 13.4 | UNC | 14 | 1.5 | 22 |
| 5/16 | — | 22 | 15.2 ~ 15.4 | Whitworth | 16 | 1.5 | 26 |
| 5/8 | 18 | 15 | 11.2 ~ 11.4 | UNC | 12 | 1.5 | 18 |
| 7/16 | 32 | 8 | 5.6 ~ 5.7 | UNC | 6 | 0.75 | 10 |
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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