Standard: HB 4277 - 1989
Available sizes: ST10 to ST8 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| ST10 | 019-1 | 6° | 15 | 23.5 | 1.5 | 6 | 120 | 60 | 6.12 | 12 |
| ST6 | 011-1 | 8° | 5 | 13.5 | 1 | 3 | 100 | 45 | 3.12 | 8 |
| ST7 | 013-1 | 8° |
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.
| 6 |
| 14.5 |
| 1.25 |
| 3 |
| 100 |
| 45 |
| 3.12 |
| 8 |
| ST8 | 017-1 | 6° | 11 | 19.5 | 1.5 | 4 | 120 | 60 | 4.12 | 10 |
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