Astro Pneumatic Tool RN4M M4 4mm Steel Rivet Nuts (100 Piece)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Zinc plated knurled steel rivet nut</li><li>Thread pitch: M4x0.7</li><li>Outside diameter: 5.9mm， length: 11mm</li><li>Drill hole size: 6mm / 7/32”， sheet metal grip range: 26 – 16ga</li><li>Head Dia: 9mm， head thickness: 0.9mm</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41GGSIXIeEL.jpg" noproxy>