double headed nail [木] 两头钉

large-headed nail [五金] 大头钉 ; 大头

cup-headed nail [机] 半球头钉

round-headed nail 圆头钉

Round headed nail 圆头钉

round flat-headed nail 圆平头钉

cone headed nail 圆锥头钉

cone-headed nail 锥头钉

Flat-headed nail 平头钉