Standard: ASME B 18.8
Available sizes: 1/4 to 7/16 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| EN | EN 22341 |
| GB | GB /T 882 |
| DIN | DIN EN 22341 |
| ISO | ISO 2341 |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.373 | 5/32 | L - 7/32 | 0.13 | 0.11 | 0.368 | 0.51 | 0.33 | 0.32 | 0.49 | 0.03 |
| 3/16 | 0.248 | 3/32 | L - 9/64 | 0.1 | 0.08 | 0.243 | 0.38 | 0.21 |
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.
| 0.2 |
| 0.36 |
| 0.03 |
| 3/8 | 0.621 | 5/32 | L - 7/32 | 0.21 | 0.19 | 0.616 | 0.82 | 0.56 | 0.55 | 0.8 | 0.06 |
| 5/16 | 0.496 | 5/32 | L - 7/32 | 0.16 | 0.14 | 0.491 | 0.63 | 0.44 | 0.43 | 0.61 | 0.04 |
| 7/16 | 0.871 | 7/32 | L - 5/16 | 0.32 | 0.3 | 0.866 | 1.04 | 0.8 | 0.79 | 1.02 | 0.09 |
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