M3 Serrated Flange Hex Lock Nuts, 316 Stainless Steel, 25 Pcs - M3x0.5mm(25 pcs)
$10.56
Fastener Type: Hex Serrated Flange Nut Thread Diameter: M3; Thread Pitch: 0.5mm; Flange Diameter(A): 8mm/0.31" Width Across Flat Size (B) : 5mm;Nut Height (M) : 3.6mm Made of stainless steel 316, good rust and corrosion resistance.