Washeri ziringaniye zikozwe mu rupapuro rw’icyuma

Washeri isanzwe ikwirakwiza uburemere bwa ecrou cyangwa umutwe wa boulon kandi ikarinda ubuso buri munsi yayo. ISO 7089 itanga washeri ya M6 ifite umwobo wa mm 6.4, umurambararo w’inyuma wa mm 12 n’ubunini bwa mm 1.6. Banza utobore umwobo mu gihe urupapuro rukiri runini kandi rworoshye gufata, ukate washeri mu buryo butanoze, hanyuma uyizengurutse kuri boulon mu mashini itobora uyikuburure ngo ibe uruziga.