I-elastic cylindrical pin, eyaziwa ngokuba yi-spring pin, yintsika engenantloko engenantloko kunye ne-axial slot kunye ne-chamfer kuzo zombini iziphelo, ezisetyenziselwa ukubeka, ukudibanisa kunye nokulungiswa phakathi kwamacandelo.Kuyimfuneko ukuba ube ne-elasticity elungileyo kunye nokumelana ne-shear, kwaye ububanzi bangaphandle bolu hlobo lwesikhonkwane bukhulu kancinane kune-aperture yendibano.