in the embodiment of fig1 web arm assembly 16 is held in place within housing 10 via a retainer ring 70 this ring also serves as a shield member to protect spring ring 40 from impact and or contact with items entering opening 18 due to its dimensions and position adjacent and covering spring ring 40 in the direction of opening 18 further ring 70 serves as an abutment or stop for the workpiece upon insertion into housing 10 ring 70 includes for example a plurality of radially extending projections 74 disposed about its circumference which can be bent slightly upon insertion into passageway 12 but which spring back out at least slightly when reaching enlargement 72 of passageway 12 in this manner the web arm assembly is restrained from removal from housing 10 once positioned therein during manufacture and or servicing preferably ring 70 is formed from metal material such as steel and is preferably resistant to deformation and loss of spring temper over a significantly wide temperature range ring 70 should also be formed from or coated with material sufficient to withstand the limited compressive forces exerted upon it and the environmental forces it faces during operation of the socket.