Cross recessed oval countersunk trim head machine screws .

十字槽小半沉头螺钉的图纸。

Countersunk flat head screws -- part 2 : penetration depth of cross recesses .

埋头螺钉－第2部分：十字槽的埋头深度。

Cross recessed countersunk head knurled screws .

十字槽沉头滚花螺钉。

Slotted raised countersunk head screws with waisted shank .

开槽半沉头不脱出螺钉的图纸。

Oval slotted countersunk head unloosing screw .

一字槽椭圆沉头木螺丝。