1. Diamita mara kyau DN:
Flangediamita mara kyau tana nufin ƙananan diamita na akwati ko bututu tare da flange.Matsakaicin diamita na kwandon yana nufin diamita na ciki na akwati (sai dai kwandon da ke da bututu a matsayin Silinda), diamita na bututu yana nufin diamita mara kyau, wanda shine darajar tsakanin diamita na ciki da diamita na waje. bututu, mafi yawansu suna kusa da diamita na ciki na bututu.Diamita na waje na bututun ƙarfe tare da diamita na ƙima iri ɗaya ne, kuma diamita na ciki ma ya bambanta saboda kauri yana canzawa.14-duba tebur 1.

2. Matsin lamba PN:
Matsin lamba shine matsi na ƙima da aka sanya don manufar kafa ma'auni.14-duba tebur 2.
3. Matsakaicin matsi na aiki da aka yarda:
Matsakaicin matsi na matsi a cikin ma'aunin flange na jirgin ruwa an ƙaddara ƙarƙashin yanayinflange abu16Mn (ko 16MnR) da ƙirar ƙira 200oC.Lokacin daflange abuda canjin yanayin zafi, matsakaicin izinin aiki na aiki na flange zai karu ko raguwa.Misali, matsakaicin matsi na aiki mai izini na flange waldi mai tsayi mai tsayi yana nunawa a cikin Tebura 14-3.