M4 Serrated Flange Hex Lock Nuts, 316 Stainless Steel, 10 Pcs - M4x0.7mm(10 pcs)
$8.02
Fastener Type: Hex Serrated Flange Nut Thread Diameter: M4; Thread Pitch: 0.7mm; Flange Diameter(A): 10mm/0.4" Width Across Flat Size (B) : 7mm;Nut Height (M) : 4.6mm Made of stainless steel 316, good rust and corrosion resistance.