A Brief Overview of Fastener Technology

is nail

is terrible picture of nail

is nail with funny head

is not nail; is pointy wire


is especially irritating form of not-nail

is somewhere between nail and not-nail

is screw

is screw made of hateful metal

is small screws made of hateful metal; note solid neck, tapered threads

is not screw; is cunning devil come from hell to plague living by shearing off in hole when too late to remove