Oglaend System S-M WA-6.1x11.8x1.6 SS is a stainless-steel spring lock washer, bore 6.1 mm, outer diameter 11.8 mm, thickness 1.6 mm. Used with M6 fasteners in Oglaend framing and support systems to maintain preload under vibration. Suited to marine and offshore installations where stainless-steel corrosion resistance is required.