Nord-Lock 254 SMO® stainless steel washers are suitable for any general saltwater application

Steel Type: EN 1.4547

Available sizes with normal outer diameter: M3 - M39 (metric) and #5 - 1 1/2” (inches)*

Available sizes with enlarged outer diameter: M3.5 - M27 (metric) and #6 - 1” (inches)*

Washer hardness: ≥ 600 HV0.05**

Corrosion resistance: PREN 45***

Temperature range: -160°C to 500°C

All washers are laser marked with brand name, control number and type code for increased traceability down to the raw material in the factory.

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

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

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

• - Wedge-locking washers in 254 SMO® material can be used for multiple stainless steel applications
• - NL3/8"spss-254 fits with 3/8" bolts
• - Nord-Lock wedge-locking washers secure bolted joints

This washer has the same inner diameter as the standard washer in same size, but it has an enlarged outer diameter. The washer is designed to work well in applications with enlarged or slotted holes.

This product is suitable for all your general stainless-steel applications and works very well in saltwater environments. To optimize the load bearing area a flanged nut or bolt should be used with this washer. Nord-Lock washers works with all common bolt grades such as; A2-50, A2-70, A2-80, A4-50, A4-70, A4-80. The material 254 SMO® provides very high corrosion resistance.