Thread Size: M4/ 0.16"Product Name: Rivet Nut; Material: 304 Stainless Steel; Weight: 52gMain Color: Silver Tone; Flange Size: 7 x 0.6mm/ 0.28" x 0.024" (D * Thickness)Thread Pitch: 0.7mm; Total Length: 10mm/ 0.4"Body Diameter: 6mm/ 0.24"; Application Hole Size: 5mm/ 0.2"Flat head cap screws, M4 female thread diameter, 10mm total length, 304 stainless steel rivet nut.These Nutserts have a flange to provide increased strength in punched and drilled holes.Knurled body provides a higher resistance to spin out when installed in soft materials.A Rivnut fastener is a tubular rivet with internal threads.It can be installed in seconds form one side of the work.Once installed, no finishing work is required on the Rivnut fastener.The added benefit of not only being a dependable fastener, they are ready to use with clean threads available for screw attachments.Blind thin sheet materials that are too thin for a tapped thread.Blind Rivet Nuts also are used when an application has little or no access to the backside as they can be installed from the front side of the work piece.Package Contents:50 (+/-2%)x Rivet NutsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.