Product series:Round head,Flush-mounted(HFH, HFHS, HFHB, TFH, TFHS)
                           Concealed-head Stud(FHL, FHLS)
                           High Tensile Strength Studs(FHX)
                           Flush-Head Studs With X-Press Threads(NFH, NFHS)
                           Hex-head Flush-mounted Stud(KFH)
                           Broaching Stud(KFH)
                           High-strenth Self-clinching Stud(CHA, CHC, CFHA, CFHC)
                           Low-displacement Head Stud(HFE)