标准:
标准库
(8)
QJ 2381-1992Knurled thumb screws with waisted shank
QJ 2382-1992Slotted raised cheese head screws with shoulder
QJ 2383-1992Slotted large raised cheese head screws
QJ 2384-1992Knurled thumb screws
QJ 2385-1992Slotted cheese head screws with holes
QJ 2386-1992Slotted round head screws
QJ 2387-1992Slotted mushroom head screws
QJ 2388-1992Slotted countersunk raised head screws