Nord-Lock Original Washers, Stainless Steel (NLss series)

Stainless steel wedge-locking washer pair for corrosive, washdown and high temperature locations. Surface hardened EN 1.4404 material with PREN 27 corrosion resistance secures fasteners up to A4-80, with service temperature from -160 to 500 C. Regular outside diameter sizes span M3 to M80, with enlarged diameter versions also produced. For acidic or extreme environments the same washer geometry is offered in 254 SMO and nickel alloys.

• Size range: M3 to M80 regular OD; enlarged OD versions available
• Part pattern: NLss and NLspss
• Material: surface hardened stainless EN 1.4404, min 520 HV0.05, PREN 27
• Temperature: -160 C to 500 C
• Bolt grades: up to A4-80
• High corrosion options: 254 SMO (PREN 45), Alloy C-276, Alloy 718
• Packaging: preassembled pairs; multi-pair packs