oval head screw 椭圆头螺钉 ; 半沉头螺钉 ; 扁圆头螺钉

oval head rivet 椭圆头铆钉

large oval head rivet 大扁圆头铆钉

iron screw with oval head 椭圆头铁螺钉

oval head brass rivet 椭圆头铜铆钉

large oval head nibbed bolt 大扁圆头带榫螺栓

oval head split rivet 椭圆头开口铆钉

oval head square neck bolt 椭圆头方颈螺栓

Oval head semi-tubular rivets 扁圆头半空心铆钉