A flexible string of interconnected sheet metal clips of the type which are adapted to hold the end bars of a sinuous or zigzag cushion-supporting springs on the wooden frame of an article of furniture. The clips are disposed in side-by-side relationship and adjacent clips in the string are connected together by a thin flexible web, the thickness of which is reduced by a swaging operation, and which serves to maintain such clips slightly spaced apart. A method of producing such a string of clips which comprises initially fashioning a substantially rigid stick of clips wherein adjacent clips are disposed in contiguous edge-to-edge relationship with adjacent clips being held in their abutting relation by an a integral narrow but full thickness web, and subsequently swaging the webs to flatten the same and thus expand the area of the webs so as to spread adjacent clips apart and produce a narrow gap therebetween, the thus expanded webs serving, collectively, to create a string of clips in which adjacent clips are sufficiently spaced apart that no interference is afforded therebetween, thus enabling the string to be coiled for clip-feeding purposes in connection with a suitable clip-applying tool.