Available sizes: 1/4 to 8# (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 1 | / | FH4 | 7.8 | 3 | / | 8.2 | 6 | 6.08 | 8.6 | 1.6~3 |
| 10# | 0.8 | FHP | FH4 | 6.1 | 2.7 | / | 6.5 |
| 5 |
| 5.08 |
| 6.9 |
| 1~2.4 |
| 4# | / | FHP | FH4 | 0.191 | 0.090 | 32 | 0.206 | 0.137 | 0.140 | 0.221 | 0.040~0.095 |
| 6# | / | FHP | FH4 | 0.241 | 0.100 | 32 | 0.256 | 0.189 | 0.192 | 0.271 | 0.040~0.095 |
| 8# | 0.5 | FHP | FH4 | 4.2 | 2.1 | / | 4.6 | 3 | 3.08 | 5 | 1~2.4 |
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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