Standard: ASME B 18.21
Available sizes: 2 to 3.5 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 2 | 2.70 | 0.64 | 0.71 | 2.55 | 4.94 | 1.02 |
| 2.5 | 3.76 | 0.79 | 0.83 | 3.58 | 6.35 | 1.19 |
| 3 | 5.26 | 1.19 | 1.1 | 5.08 | 8.66 | 1.57 |
| 3.5 | 8.36 | 1.98 | 2.23 |
| 8.13 |
| 14.96 |
| 3.18 |
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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