角花

1

GB/T6190-1986内六角花形圆柱头螺钉4.8级

Hexagon lobular socket head cap screws & Property class 4.8
2

齿轮渐开线及螺旋角测量仪内六角花形螺钉旋具

Involute and helix measuring instrument hexagon spline screw driver
3

GB/T2674-1986内六角花形半沉头螺钉

Hexagon lobular socket raised countersunk head screws
4

六键拉刀，花键拉刀内六角花形螺钉旋具

Six-keyway broach hexagon spline screw driver
5

GB/T2672-1986内六角花形盘头螺钉你看见那大蛇盘卷在角落里吗？

Hexagon lobular socket pan head screws Do you see that serpent coiled up in the corner ?