Plastic diamond knurlhead screws
GB/T840-1988塑料滚花头螺钉
Knurled screws with small head
GB/T836-1988滚花小头螺钉
Knurled thumb screws
GB/T834-1988滚花高头螺钉
Knurled thumb screws with waisted shank
GB/T839-1988滚花头不脱出螺钉
" Screws,fluted socket head"
GB/T824-1976圆柱头内花键螺钉
Hexagon lobular socket countersunk head screws
GB/T2673-1986内六角花形沉头螺钉
Hexagon lobular socket head cap screws--Property class 4.8
GB/T6190-1986内六角花形圆柱头螺钉4.8级
Hexagon lobular socket head cap screws--Property class 8.8
GB/T6191-1986内六角花形圆柱头螺钉8.8级
Hexagon lobular socket raised countersunk head screws
GB/T2674-1986内六角花形半沉头螺钉
Hexagon lobular socket pan head screws
GB/T2672-1986内六角花形盘头螺钉
377 bolt (screw, nut, stud, spring washer, pin, ball bearing, roller bearing) is the most commonly used machine part.
螺栓（螺钉、螺帽、双头螺栓、弹簧垫圈、销、滚珠轴承、滚柱轴承）是最常用的机械零件。
Hexagon lobular socket thread forming screws
GB/T6564-1986内六角花形圆柱头自攻锁紧螺钉
hexagon spline screw driver
内六角花形螺钉旋具
screw nail pointed with slotted heads, of iron or steel
槽头尖端螺钉,铁或钢制
Slotted round head wood screws
GB/T99-1986开槽圆头木螺钉
Slotted countersunk head screws
GB/T68-1985开槽沉头螺钉
Hexagon head tapping screws
GB/T5285-1985六角头自攻螺钉
Slotted cheese head screws
GB/T65-1985开槽圆柱头螺钉