Cabbirrada muhiimka ah (sida godadka gudaha iyo afka joojinta) waxaa lagu xakameeyaa iyadoo la raacayo dulqaadka sawirrada, guud ahaan H7/h7 ama sida waafaqsan shuruudaha macaamiisha.
- Isku-xidhnaan ≤ 0.03mm, toosan oo wejiga dhammaadka ah ≤ 0.05mm (lagu hagaajiyay iyadoo loo eegayo dhexroorka kala duwan)
Qaybinta godadka dunta leh waxaa loo habeeyey sida ku cad sawirka, heerarka duntuna waxay taageeraan UNC, UNF, M, iwm.
Qalafsanaanta dusha sare ee flange-ka waxaa guud ahaan lagu xakameeyaa gudaha Ra 3.2 ilaa 6.3 µm