A wingnut, wing nut or butterfly nut is a type of nut that can be tightened and loosened by hand, without requiring the use of any tools. Wing nuts are tightened using the two wing-shaped extensions on either side of the nut.
Standards: DIN 315; ASME B18.6.X
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A general purpose stainless steel which strikes a good balance between corrosion-resistance and cost.
Often referred to as 'marine grade' stainless steel due to it's excellent anti-corrosion properties, making it great for saltwater resistance.