Uamea fausaga emo o se ituaiga o maualuga-malosi faʻamau ma se ituaiga o tulaga masani. Uamea fausaga faʻamau e masani lava ona faʻaaogaina i le uʻamea faʻatinoina inisinia e fesoʻotaʻi fesoʻotaʻiga manatu o uʻamea fausia fausaga. O faʻamau faʻavae uamea ua vaevaeina i torsional shear ituaiga maualuga-malosi faʻamau ma tetele hexagonal maualuga-malosi faʻamau. Tetele hexagonal maualuga-malosi faʻamau faʻamau i le maualuga-malosi vasega o masani fao, ao torsional seleulu ituaiga maualuga-malosi faʻamau o le faʻaleleia o tele hexagonal maualuga-malosi faʻamau. Mo le lelei fausiaina, o le fausiaina o uʻamea faʻamau faʻamau tatau ona faʻamamaina muamua ma mulimuli ane. Mo le faʻamamaina muamua o uʻamea faʻamau faʻamau, aʻafiaga ituaiga eletise wrenches poʻo toroa faʻaleleia fetuʻunaʻiga eletise e manaʻomia. O le faʻamamafaina mulimuli o uʻamea faʻamau faʻamau o loʻo i ai aiaiga manaʻomia. O le faʻamamaina mulimuli o torsional shear ituaiga uʻamea faʻamau faʻamau tatau tatau ona faʻaaoga torsional shear ituaiga uila eletise, ma le mulimuli faʻamamafaina o torque ituaiga uʻamea faʻamau faʻamau tatau ona faʻaaogaina torque ituaiga uila afi. O le torsional shear ituaiga uamea fausaga faʻamau e aofia ai se faʻamau, o se pinati, o se torsional shear ituaiga maualuga malosi faʻamau uʻamea fausaga tetele tele hexagonal emo ma se washer.