An automotive door panel fastener assembly is provided including a
substrate and a doghouse structure molded thereon. The doghouse structure
includes a doghouse floor, a doghouse ceiling, a first doghouse sidewall
having a first forward end and a first rearward end, a second doghouse
sidewall having a second forward end and a second rearward end, a
doghouse endwall, and a doghouse insertion opening. A pin chamber is
formed through the doghouse ceiling. An entrance slot is formed in the
doghouse ceiling to provide a path from the doghouse insertion opening to
the pin chamber. The entrance slot has a first slot side and a second
slot side. A first flexible arm has a first fixed end and a first free
end. The first flexible arm is flexible in response to an inward force
and is rigid in response to an outward force.