These 1/2 hex body nutserts have broad flange to supply elevated energy in punched and drilled holes. Blind threaded inserts are designed to produce solid threads in thin panel sections. They are referred to as blind because they are often put in from one side of the panel. Access to each side isn't always required, That is why these fasteners are splendid for tubing, extrusion, and other identical forms of applications. Product Name: Rivet Nut Material: Carbon Steel, Zinc Plated Main Color: Bronze Tone Flange Size (dk*k): 12.5 x 1.3mm/ 0.5 inch x 0.05 inch(D*Thickness) Thread Size: (d) M6/ 0.24 inch Thread Pitch: 1mm Total Length (L): 14.5mm/ 0.57 inch Hex Body Size (M): 8.8mm/ 0.35 inch Application Hole Size: 8mm/ 0.3 inch Round Body Diameter (D): 8.8mm/ 0.35 inch Weight: 77g Package Content: 20 x Rivet Nuts Note: Light capturing and varied exhibits could cause the color of the article within the picture somewhat diverse from the genuine thing. The measurement allowed error is +/- 1-3cm.