Shanƙyama shine kayan aiki na haɗin haɗi a cikin ɗagawa. Ana amfani da shi akasari don sassan haɗin da aka haɗa akai-akai kuma an cire su a hoisting. Lokacin da aka yi amfani da riguna a cikin haɗin tare da katako, ana iya amfani da gunkin a saman rigunan maimakon ɗaukar hoto da farantin ƙarfe a ƙarƙashin katako. Haɗin don shigarwa mai sauƙi da cirewa. An yi amfani da shackles a cikin wutar lantarki, petrooleum, kayan aikin iska, masana'antar ta sinadarai, tashar jiragen ruwa, gini da sauran masana'antu, kuma suna da matukar mahimmancin haɗawa da wasu masana'antu.