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We supply Wingnuts in Steel, Stainless Steel grades A2 (304) & A4 (316), Brass & Nylon.
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Dimensions for Wing nuts - Light (american) type ANSI B18.17 as pictured

Diameter Pitch Height of body (excl. wing) Width of Wing Overall Height of Nut
M3 0.5mm 3.3mm 18.7mm 8.6mm
M4 0.7mm 3.3mm 18.7mm 8.6mm
M5 0.8mm 3.8mm 22.5mm 10.5mm
M6 1.0mm 4.7mm 27.2mm 12.7mm
M8 1.25mm 5.6mm 30mm 14.6mm
M10 1.5mm 6.3mm 35mm 16.7mm
M12 1.75mm 7.5mm 47.6mm 22.3mm
M16 2mm 10.7mm 62mm 30.8mm
M20 2.5mm 12mm 66mm 30.5mm