Patent ID: 7156598

Claim:
A fastener for use in insert molded plastic components comprising: a head portion having an upper part and a lower part, said upper part being formed in a convoluted configuration on a top surface defining recesses into said top surface, said top surface being formed with a pair of grooves oriented substantially perpendicularly to one another to define a first portion of said recesses into said top surface of said head portion and with a deep recess positioned centrally on said top surface with said grooves cutting through said deep recess, said upper part of said head portion also being formed with rounded corners on a periphery of said upper part, said lower part being formed in a geometrical shape smaller than said upper part such that an under surface of said upper part forms a circumferential land area around said lower part; said lower part of said head portion also being formed with a generally square face oriented generally perpendicularly to said shank portion, said generally square face being formed with rounded corners and a shank portion projecting centrally outwardly from said lower part.