... : C3604, C3600, C3602, H59-1, HPb59-1 BZ5A, H62 NUT rivet nut hex nut Model: hexagonal, square, flower toothed, octagonal, roundThe materials: C3604 ... ,10-24 ,10-32, 1/4-20Surface treatment: degreasingProduction equipment: a high-precision automatic lathes, CNC walking effort, Nomura cam walking ...