Standard: NZS 2451 - 1998
Available sizes: 1/2 to 7/16 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 1/2 | 7 | 1 | 0.96 | 1.67 | 1.64 | 1.87 |
| 1/4 | 18 | 0.25 | 0.23 | 0.525 | 0.515 | 0.59 |
| 3/4 | 5 | 1.58 | 1.5 | 2.41 | 2.365 | 2.7 |
| 3/8 | 11 | 0.562 | 0.542 |
| 1.01 |
| 0.985 |
| 1.12 |
| 5/16 | 14 | 0.375 | 0.355 | 0.71 | 0.695 | 0.79 |
| 5/8 | 6 | 1.25 | 1.119 | 2.05 | 2.005 | 2.29 |
| 7/16 | 9 | 0.75 | 0.72 | 1.3 | 1.27 | 1.45 |
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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