角花
角花-
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
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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
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GB/T2674-1986内六角花形半沉头螺钉
Hexagon lobular socket raised countersunk head screws
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六键拉刀，花键拉刀内六角花形螺钉旋具
Six-keyway broach hexagon spline screw driver
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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 ?