Izikreyi zisetyenziswa ngokubanzi. I-Screws yenye yezinto ezihlala kuzo.Isetyenziselwa ikakhulu le mihlaba mine ilandelayo:

1. Ipleyiti yentsimbi engenasiphene, ipleyiti yensimbi, ipleyiti yensimbi yofakelo, ukufakwa kobunjineli.

2. Isinyithi sedonga lesinyithi sensimbi ukukhanya kunye nolunye ufakelo lwangaphakathi nolwangaphandle.

3. Intsimbi ye-Angle ngokubanzi, isinyithi sensimbi, ipleyiti yesinyithi kunye nezinye izinto zentsimbi ezihlanganisiweyo ekufakweni.

4. Iiprojekthi zeendibano zeebhokisi zezithuthi, iibhokisi zeenkonkxa, ishishini lokwakha iinqanawa, izixhobo zefriji, njl.