Mittory Gift for Women Men 100×Rivet Screw Tool Carbon Steel Threaded Screw 1/4in-20 Flat Head Screw USA

100×Rivet Screw Tool Carbon Steel Threaded Screw 1/4in-20 Flat Head Screw USA Description: Flat head cap screws M8 female thread diameter 18mm total length zinc plated surface carbon steel half hex body insert rivets nuts. These half hex body nutserts have large flange to provide increased strength in punched and drilled holes. Blind threaded inserts are designed to provide strong threads in thin panel sections. They are called blind because they can be installed from one side of the panel. Access to both sides is not required. That is why these fasteners are ideally suited for tubing extrusion and other similar types of applications.