Description
Nord-Lock X-Series® Washers are the premium choice for bolted joints operating in severe environments where maintaining clamp load is critical. They combine the proven wedge-locking technology of the original Nord-Lock washers with a specially engineered conical shape that compresses and springs back to compensate for joint relaxation and settlement.
Each X-Series washer pair features cams on one side and radial serrations on the opposite side. The cam angle is greater than the thread pitch, creating a wedge-locking effect that prevents the fastener from loosening under vibration while maintaining clamp force throughout the life of the joint.
Finished with Delta Protekt® coating, X-Series washers provide excellent corrosion resistance and are suitable for demanding industrial applications.
Features
- Proven Nord-Lock® wedge-locking technology
- Conical washer design maintains bolt tension
- Compensates for joint relaxation and settlement
- Prevents self-loosening caused by vibration
- Delta Protekt® corrosion-resistant coating
- Suitable for joints with short clamp lengths
- Reusable depending on application
- Premium engineered locking washer system
Suitable for:
- Bolted joints
- Rail applications
- Train assemblies
- Wind turbines
- Motors
- Heavy machinery
- Mining equipment
- Industrial maintenance
Specifications
| Property | Specification |
|---|---|
| Brand | Nord-Lock® |
| Product | X-Series Washer |
| Type | Wedge-Locking Washer |
| Standard | Metric |
| Finish | Delta Protekt® |
| Technology | Wedge-Locking with Conical Spring Design |
| Reusable | Yes (depending on application) |
Available Sizes

| Part Number | QFind | Size | Inner Diameter ID | Outer Diameter OD | Thickness T |
| WNXTDDM06 | NLX6 | M6 | 6.3mm | 11.0mm | 1.8mm |
| WNXTDDM08 | NLX8 | M8 (5/16″) | 8.4mm | 13.5mm | 2.3mm |
| WNXTDDM10 | NLX10 | M10 | 10.5mm | 16.6mm | 3.0mm |
| WNXTDDM12 | NLX12 | M12 | 12.5mm | 19.5mm | 3.5mm |
| WNXTDDM14 | NLX14 | M14 (9/16″) | 14.6mm | 23.0mm | 4.0mm |
| WNXTDDM16 | NLX16 | M16 (5/8″) | 16.6mm | 25.4mm | 4.7mm |
| WNXTDDM18 | NLX18 | M18 | — | — | — |
| WNXTDDM20 | NLX20 | M20 | 20.7mm | 30.7mm | 6.0mm |
| WNXTDDM24 | NLX24 | M24 | — | — | — |
| WNXTDDM27 | NLX27 | M27 | — | — | — |
Why Choose Nord-Lock X-Series Washers?
Nord-Lock X-Series® Washers provide enhanced joint security by combining wedge-locking technology with a conical spring design that maintains preload throughout the life of the bolted joint. This dual-action design helps prevent loosening caused by vibration while compensating for relaxation and settlement, making them the preferred choice for demanding industrial and heavy-duty applications.