Knurled Flanged Rivet Nut, #10-32 Dia./Thread Size, 0.4 in Head Dia., 0.594 in L, Steel, 50 PKMfr # U69135. 019. 0226 Item Rivet Nut Rivet Nut Type Knurled Flanged Basic Material Steel Finish Zinc Plated Grip Range 0. 130 in to 0. 225 in System of Measurement Inch Open End Closed End Open End Application Used To Securely Fasten Metals, Fiberglass Or Rigid Plastic Materials By Creating Permanent Threads, Ideal For Materials Considered Too Thin For Tapered Threads