M4 Serrated Flange Hex Lock Nuts, 201 Stainless Steel, 50 Pcs - M4x0.7mm(50 pcs)
$11.44
Fastener Type: Hex Serrated Flange Nut Thread Diameter: M4; Thread Pitch: 0.7mm; Flange Diameter(A): 10mm/0.39" Width Across Flat Size (B) : 7mm;Nut Height (M) : 4mm Made of stainless steel 201, wear-resisting and durable to use.