Tab washers are locking washers designed to keep an assembly from rotating.The tab is bent over the edge of the assembly or into a hole to lock the nut or bolt into place.A4 stainless steel is functionally equivalent to 316 grade and is also known as "marine grade".Stainless steel significantly improves resistance to tarnishing or corrosion.Diameter (Nominal): M16Inside Diameter (Nominal): 17mmOutside Diameter (Nominal): 36mmThickness (Nominal): 1mmProduct Class: WashersOrder: Lock WashersCategory: Tab WashersSystem of Measurement: MetricBrand: Aspen Fasteners®Form and Design: 1 TabMaterial: Stainless SteelMaterial Grade: A4 Stainless SteelCoating: UncoatedStandards and Specifications: DIN 93