ALNd — BSF Class 8 (Double-Slotted All-Metal Lock Nuts)
Steel Class 8 prevailing-torque lock nuts (BSF thread) per ISO 2320. Clear Zinc finish as standard. Robust, reusable, and RoHS conformant.
- Material grade: Steel Class 8 (hardness per ISO 898-2).
- Finish: Clear Zinc (RoHS).
- Performance: Prevailing-torque compliant with ISO 2320; proof load per ISO 898-2.
- Thread: BSF (British Standard Fine).
- Compliance: RoHS conformant.
- Note: U.S. Grade 5 nuts are similar in strength to European Metric Class 8.
| Part Number | d | Pitch (TPI) | S / inch | h / inch | m / inch |
|---|---|---|---|---|---|
| ALNd426BSFCL8 | 1/4 | 26 | 0,445 | 0,340 | 0,175 |
| ALNd522BSFCL8 | 5/16 | 22 | 0,525 | 0,400 | 0,227 |
| ALNd620BSFCL8 | 3/8 | 20 | 0,600 | 0,490 | 0,289 |
| ALNd718BSFCL8 | 7/16 | 18 | 0,710 | 0,555 | 0,352 |
| ALNd816BSFCL8 | 1/2 | 16 | 0,820 | 0,665 | 0,415 |
| ALNd916BSFCL8 | 9/16 | 16 | 0,920 | 0,728 | 0,428 |
| ALNd1014BSFCL8 | 5/8 | 14 | 1,010 | 0,799 | 0,475 |
| ALNd1212BSFCL8 | 3/4 | 12 | 1,200 | 0,961 | 0,583 |
| ALNd1411BSFCL8 | 7/8 | 11 | 1,300 | 1,046 | 0,638 |
| ALNd1610BSFCL8 | 1 | 10 | 1,480 | 1,199 | 0,730 |
| ALNd1809BSFCL8 | 1 1/8 | 9 | 1,670 | 1,358 | 0,870 |
| ALNd2009BSFCL8 | 1 1/4 | 9 | 1,860 | 1,498 | 0,960 |
| ALNd2208BSFCL8 | 1 3/8 | 8 | 2,060 | 1,646 | 1,055 |
| ALNd2408BSFCL8 | 1 1/2 | 8 | 2,220 | 1,799 | 1,153 |
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Available on request: alternative finishes/material grades and additional sizes.
Sizes may diverge from those stated above. For safety-critical applications, confirm specification, torque, and material with engineering.