JACK NUTS THREADED INSERTS BLIND SPIDER NUT RIVNUTS SCREW ANCHOR M4 M5 M6 M8 M10

Setting Tool suitable for M4 - M8. Place into a pre-drilled hole and tighten, the body splayes on the blind side of the material. Also known as Spyder Jack Nuts or Pop Jack Nuts. A versatile insert nut for brittle, thin, or soft materials.