Nord-Lock NL20sp wedge-locking washer pair for M20 bolt, 316 stainless steel. Two washers per pair with cam-face design where cam angle exceeds bolt thread pitch — vibration LOOSENING is mechanically prevented. DIN 25201-4 (junker vibration test) certified. Applications: marine, offshore, wind-turbine, rail, and heavy-duty machinery bolted joints under dynamic loading. Companion sizes NL8sp (M8), NL10sp (M10), NL12sp (M12), NL16sp (M16), NL24sp (M24) stocked.
| Material | 316 stainless steel |
| Approval | DIN 25201 |
| Standards | DIN 25201, DIN 25201., ISO 7089, ISO 7090 |
| HS code | 7318.22 |
| Thread size | M20 |
| Material | 316 stainless steel |
| MOQ | 1 |