Shiraho imigozi, izwi kandi nka grub screw, ni ubwoko bwihuta bukoreshwa mukurinda ikintu kimwe imbere cyangwa ikindi. Bitandukanye na gakondo ya bolts na screw, shiraho imigozi ntabwo ifite umutwe kandi mubisanzwe byuzuye. Byaremewe gutwarwa mu mwobo wabanje gucukurwa kandi akenshi bifite ingingo cyangwa igikombe kumpera gishobora gukanda ku giti cyangwa ikindi kintu, gitanga igikwiye, gifite umutekano. Muri iyi nyandiko ya blog, tuzasesengura ibintu byingenzi byashyizweho, harimo ubwoko, ibyiza, hamwe nibisanzwe.