General description Butterfly Wing Nuts are designed for easy fastening and tightening, allowing for quick adjustments without the need for tools. They are particularly popular in the marine industry due to their robust construction from 316 Grade Stainless Steel, which provides excellent rust protection. Technical specifications Internal Thread Diameter: 12MM Width: 240MM Metal: 316 Grade Stainless Steel Product Code: SFSSTN12 Dimensions: A (MM): 39 B (MM): 240 C (MM): 30 D (MM): 12 E (MM): 75 Usage Wing Nuts are ideal for applications where frequent adjustments are necessary, allowing for quick and easy turning without tools.