Inonyanya kushandiswa kubatanidza zvikamu zviduku. Iyo ine pani yemusoro screws, cylindrical head screws, semi-countersunk head screws uye countersunk head screws. Simba remusoro wescrew wepani musoro screws...
bm = 1d kaviri stud inowanzoshandiswa pakubatanidza pakati pezvikamu zviviri zvesimbi zvakabatanidzwa; bm=1.25d uye bm=1.5d double stud inowanzo shandiswa kubatanidza pakati pesimbi yakakandwa yekubatanidza...
Zvinoenderana neforce mode yekubatanidza, yakakamurwa kuita akajairwa uye ane hinged makomba. Zvinoenderana nechimiro chemusoro: hexagonal head, round head, square head, countersunk head zvichingodaro.