-Upper Looper Screw

-Part # 544413

-Fits Singer serger models 14U12A, 14U13A, 14U22A, 14U234, 14U234B, 14U23A, 14U285, 14U286, 14U32A, 14U344, 14U34(14U34B), 14U354, 14U44, 14U444, 14U454, 14U455, 14U46B, 14U52A, 14U53A, 14U544, 14U554, 14U555, 14U557, 14U594, 14U595, 14U64A, 14U65B, 14U85B, 212A141BA, 212A541BA, 212A143BA, 212A543BA, 212A939JA, 212A141GA, 212A541GA, 212A143GA, 212A543GA, 212A939KA, 691D100GG, 691D110GG, 691D150GG, 691D200GG, 691D210GG, 691D250GG, 691D300GG, 691D310GG, 691D350GG, PRO4D