M3x0.5mm Zinc Plated Self-Locking Nylon Insert Hex Lock Nuts 50pcs<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Thread Size: (Female)M3; Product Name: Nylon Lock Nuts</li><li>Material: Zinc Plated; Weight: 26g</li><li>Package Content: 50(+/-2%)Pcs x Nylon Lock Nuts; Main Color: Silver Tone</li><li>Height: 4mm/0.16"; Pitch: 0.5mm</li><li>Width Across Flats: 5.4mm/0.21"; Width Across Corners: 6.1mm/0.24"</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41jHPPYWzLL.jpg" noproxy>