M4 Blind Rivet Nuts, Countersunk Head, Grooved Round Body, Open-ended Threaded Insert, 4mm Nutsert, Zinc Plated Steel Knurled Rivnut, Rivsert for Steel, Alloy, Copper, Plastic, Fiberglass (5 pcs.)

USAGE OF RIVET NUTS: Rivet nuts provide simple and effective way to join materials with the benefits of internal thread in variety of applications (ideal replacement for weld nuts). ZINC PLATED STEEL: Rivet nuts are made of steel with high hardness and excellent corrosion resistance, Durable and not deformed for long time use. ADVANTAGES OF NUTSERTS: Grooved Cylindrical shape supports High resistance, open-ended so screw length can be varied, countersunk head so the loading is spreadover a large area and sit flush with the surface . INSERT NUTS INSTALLATION: Just drill a hole according to the size of the rivet nut, and use a rivet gun to turn the nut into the hole. WIDE APPLICATION: The captive nut not only can be used in mechanical, car, marine, industrial, but also ideal for bicycle, DIY furniture work.