ALNd — BSW Class 8 (Double-Slotted All-Metal Lock Nuts)
Steel Class 8 prevailing-torque nuts per ISO 2320 with BSW (British Standard Whitworth) threads. Clear-zinc finish as standard; engineered for repeatable assembly and reliable re-use.
- Material grade: Steel Class 8 (hardness per ISO 898-2).
- Finish: Clear Zinc.
- Performance: Prevailing-torque compliant with ISO 2320 (re-use cycles).
- 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 |
|---|---|---|---|---|---|
| ALNd420BSWCL8 | 1/4 | 20 | 0,445 | 0,340 | 0,175 |
| ALNd518BSWCL8 | 5/16 | 18 | 0,525 | 0,400 | 0,227 |
| ALNd616BSWCL8 | 3/8 | 16 | 0,600 | 0,490 | 0,289 |
| ALNd714BSWCL8 | 7/16 | 14 | 0,710 | 0,555 | 0,352 |
| ALNd813BSWCL8 | 1/2 | 13 | 0,820 | 0,665 | 0,415 |
| ALNd912BSWCL8 | 9/16 | 12 | 0,920 | 0,728 | 0,428 |
| ALNd1011BSWCL8 | 5/8 | 11 | 1,010 | 0,799 | 0,475 |
| ALNd1210BSWCL8 | 3/4 | 10 | 1,200 | 0,961 | 0,583 |
| ALNd1409BSWCL8 | 7/8 | 9 | 1,300 | 1,046 | 0,638 |
| ALNd1608BSWCL8 | 1 | 8 | 1,480 | 1,199 | 0,730 |
| ALNd1807BSWCL8 | 1 1/8 | 7 | 1,670 | 1,358 | 0,870 |
| ALNd2007BSWCL8 | 1 1/4 | 7 | 1,860 | 1,498 | 0,960 |
| ALNd2206BSWCL8 | 1 3/8 | 6 | 2,060 | 1,646 | 1,055 |
| ALNd2406BSWCL8 | 1 1/2 | 6 | 2,220 | 1,799 | 1,153 |
| ALNd2805BSWCL8 | 1 3/4 | 5 | 2,580 | 2,101 | 1,367 |
| ALNd32045BSWCL8 | 2 | 4 1/2 | 2,760 | 2,226 | 1,429 |
| ALNd36045BSWCL8 | 2 1/4 | 4 1/2 | 3,150 | 2,340 | 1,510 |
| ALNd4004BSWCL8 | 2 1/2 | 4 | 3,550 | 2,550 | 1,686 |
| ALNd4404BSWCL8 | 2 3/4 | 4 | 3,890 | 2,845 | 1,932 |
| ALNd4804BSWCL8 | 3 | 4 | 4,180 | 3,062 | 2,151 |
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Available on request: different finish grades and additional sizes.
Sizes may diverge from those stated above. For safety-critical applications, confirm specification, torque, and material with engineering.