M4 x 4mm(L) x 6mm(OD) Brass Knurled Threaded Insert Embedment Nuts, 100 Pcs - Brass Tone
$11.99
[M4 Metric] - Thread Diameter: M4; Pitch: 0.7mm; Outer Dia: 6mm; Length: 4mm. [Material] - Made of brass material, high hardness and durable.