Ama-Screw Jacks asetshenziselwa ukunakekelwa kwezimoto zikaloliwe, izimayini, ukusekela ubunjiniyela bokwakha, kanye nokuphakamisa nokwehlisa okuvamile kwezinto ezisindayo. Ngenxa yokuthi iyaphatheka, kulula ukuyinakekela, futhi iphephile ukuyisebenzisa, isetshenziswa kakhulu emisebenzini yokuphakamisa amaselula. Isibonelo, imoto yesitimela ingangena esikhundleni sesigodi se-asi kanye nesakhiwo sensimbi yensimbi ukuze ifakwe futhi isekele, ukuze kuzuzwe inhloso yokuphakamisa ngokuphepha nangokuthembekile.