Expansion shear pin for use with thread-forming screw

A system for attaching a component to a molded part comprising:

• a molded part flange;
• a component flange;
• a fastener;
• a bore having an inner diameter formed in said component flange;
• and
• a pin extending outwardly from said molded part flange and integrally formed therewith, said pin being insertable into said bore and having a wall expandable from a first diameter to a second diameter, said first diameter being less than said inner diameter and said second diameter being equal to said inner diameter.

A method for attaching a component having a component flange to a manifold having a manifold flange, the method comprising:

• forming an assembly system comprising a fastener and a locator and expansion shear pin integrally formed with the manifold flange, said locator and expansion shear pin having an expandable wall extending from the manifold flange, and a bore formed in the component flange;
• placing said wall within said bore;
• and
• inserting said fastener, whereby said expandable wall is movable within said bore when initially attached but is expanded into said bore after insertion of said fastener to restrict movement therein.