Umdibaniso wokunciphisa umsonto wangaphandle ophindwe kabini ukwabizwa ngokuba yi-hexagonal yokunciphisa joint kunye ne-hexagonal threaded joint.Yinguqulelo eguquguqukayo yodibaniso oludityanisiweyo olulinganayo.;Okwangoku, uluhlu lobungakanani esinokubonelela ngalo luphakathi kwe 1/4 intshi kunye ne 4 intshi.