Screw Thread vials uye Caps inopa yakadzika yekuvhuvhu, kudzoreredza, kushoma-ruoko kukuvara panguva yekunyengera pane crimp zvisimbiso uye zvinoda zvishandiso zvakakosha. All screw threads vials uye caps akasiyaniswa neyakaipedza kupedzisa kana yatsanangurwa negirazi rekutora, GPI. Ye screw thread vigials, nhamba mbiri chikamu chakapihwa. Semuenzaniso, 8-425 mutsipa yekupedzerwa inomiririra vial neyakajairwa ye8 mm mhiri kwemasereka uye tambo yemakumi mana nemakumi mana neshanu.
