大柱头螺钉 meaning in Chinese

pan head screw

Aircraft fasteners . non - magnetic pan head screws with truncated cone point . cross recess
航空紧固件.带截顶锥十字槽非磁性大柱头螺钉
Diameters of counterbores for hexagon socket head cap screws and screws with cheese head or pan head ; manufacturing dimensions
六角凹头有帽螺钉和圆头螺钉或大柱头螺钉用沉孔直径
Aerospace series - screws , pan head , slotted , threaded to head , in alloy steel , cadmium plated - classification : 900 mpa at ambient temperature 235 c ; german version en 2649 : 1995
航空航天系列.镀镉合金钢全螺纹带槽大柱头螺钉.等级