Nord-Lock stainless steel washers are suitable for all your general stainless-steel applications. For better corrosion resistance like saltwater environments have a look at our washers made out of 254 SMO®.

Steel Type: EN 1.4404

Available sizes with normal outer diameter: M3 - M42 (metric) and #5 - 1 1/2” (inches)*

Available sizes with enlarged outer diameter: M3.5 - M30 (metric) and #6 - 1 1/8” (inches)*

Washer hardness: ≥ 520 HV0.05**

Corrosion resistance: PREN 27***

Temperature range: -160°C to 500°C

Washers are laser marked with Nord-Lock brand name, control number and type code for traceability.

* View dimension list to determine the required washer size for your bolt.

** To assure the unique mechanical wedge-locking function of Nord-Lock washers, the hardness of contact surfaces must be lower than the hardness of Nord-Lock washers. Go to the washer selection guide for the hardness conversion table.

*** PREN (Pitting Resistance Equivalent Number) = %Cr + 3,3x%Mo + 16x%N.