Standard: JB 998 - 1977
Available sizes: (18) to 22 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (18) | 25 | 4 | 3.5 | 44 | 64 | 33 | 33.34 | 36 | 50 | 34.8 | 24 |
| 10 | 10 | 2 | 2 | 19 | 28 | 14 | 14.24 | 11 |
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.
| 18 |
| 16 |
| 20 |
| 14 | 12 | 2 | 2 | 25 | 36 | 20 | 20.24 | 15 | 22 | 19 | 25 |
| 18 | 15 | 2 | 2.5 | 30 | 46 | 24 | 24.28 | 19 | 30 | 22 | 30 |
| 22 | 36 | 4 | 5 | 61 | 90 | 48 | 48.34 | 52 | 72 | 50.8 | 33 |
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