Product name
m3 m4 m5 m6 m8 through hole Rivnut Insert Nutsert aluminum rivet nut
various types
cylindrical,hexagonal,square,ball etc
Size
m3 m4 m5 m6 m8 m10 m12
Material
aluminum,carbon steel,stainless steel,brass etc
Surface treatment
zinc/nickle/brass plating,black anodizing,hardened etc