ALNd — Metric Class 8 (Double-Slotted All-Metal Lock Nuts)
Steel Class 8 prevailing-torque nuts per ISO 2320, optimized for repeatable assembly and re-use. Zinc & Yellow (RoHS) finish as standard; Cadmium/Nickel on request.


- Material grade: Steel Class 8 (hardness per ISO 898-2).
- Finish: Zinc & Yellow (RoHS). Optional Cadmium or Nickel.
- 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 | S | h | m |
|---|---|---|---|---|---|
| ALNdM2,5X045CL8 | M2,5 | 0,45 | 5,0 | 4,5 | 2,4 |
| ALNdM3X050CL8 | M3 | 0,50 | 5,5 | 4,75 | 2,45 |
| ALNdM3,5X060CL8 | M3,5 | 0,60 | 7,0 | 5,0 | 2,5 |
| ALNdM4X070CL8 | M4 | 0,70 | 7,0 | 5,6 | 3,3 |
| ALNdM5X080CL8 | M5 | 0,80 | 8,0 | 6,8 | 3,9 |
| ALNdM6X100CL8 | M6 | 1,00 | 10,0 | 8,5 | 5,0 |
| ALNdM8X125CL8 | M8 | 1,25 | 13,0 | 10,5 | 6,0 |
| ALNdM10X150CL8 | M10 | 1,50 | 17,0 | 13,0 | 7,6 |
| ALNdM12X175CL8 | M12 | 1,75 | 19,0 | 15,0 | 8,5 |
| ALNdM14X200CL8 | M14 | 2,00 | 22,0 | 17,0 | 10,0 |
| ALNdM16X200CL8 | M16 | 2,00 | 24,0 | 19,5 | 12,0 |
| ALNdM18X250CL8 | M18 | 2,50 | 27,0 | 22,0 | 14,0 |
| ALNdM20X250CL8 | M20 | 2,50 | 30,0 | 24,0 | 15,5 |
| ALNdM22X250CL8 | M22 | 2,50 | 32,0 | 26,5 | 17,5 |
| ALNdM24X300CL8 | M24 | 3,00 | 36,0 | 29,0 | 19,0 |
| ALNdM27X300CL8 | M27 | 3,00 | 41,0 | 33,0 | 22,0 |
| ALNdM30X350CL8 | M30 | 3,50 | 46,0 | 39,0 | 26,0 |
| ALNdM33X350CL8 | M33 | 3,50 | 50,0 | 43,0 | 30,0 |
| ALNdM36X400CL8 | M36 | 4,00 | 55,0 | 47,0 | 32,5 |
| ALNdM39X400CL8 | M39 | 4,00 | 60,0 | 50,0 | 35,0 |
| ALNdM42X450CL8 | M42 | 4,50 | 65,0 | 54,0 | 37,5 |
| ALNdM45X450CL8 | M45 | 4,50 | 70,0 | 58,0 | 41,0 |
| ALNdM48X500CL8 | M48 | 5,00 | 75,0 | 62,0 | 42,5 |
Scroll horizontally →
Available on request: alternative material/finish grades and additional sizes.
Sizes may diverge from those stated above. For flight- or safety-critical applications, confirm specification, torque, and material with engineering.