Fasteners and Geometry for Casting Attachment

A retainer assembly to couple a first component having an opening to a second component having a rib, the retainer assembly comprising:

• a male fastener configured to pass at least partially through the opening formed in the first component;
• and
• a retainer having a body portion, one or more tabs, and a plurality of retention clips,
• wherein a female fastener is formed in the body portion and is configured to receive the male fastener;
• wherein the plurality of retention clips is resiliently coupled to the body portion,
• wherein the one or more tabs and at least one of the plurality of retention clips cooperate to define a cavity configured to receive the rib, and
• wherein the plurality of retention clips is arranged to engage and retain the rib within the cavity.

A retainer to couple a first component to a second component having a rib via a male fastener, the retainer comprising:

• a body portion having formed therein a female fastener,
• wherein the female fastener is shaped as a collar with a plurality of grooves formed on an inner sidewall surface thereof and configured to receive the male fastener;
• one or more tabs coupled to the body portion;
• and
• a first retention clip, a second retention clip, and a third retention clip resiliently coupled to the body portion to define a cavity,
• wherein the first retention clip and the third retention clip are configured to pinch, scrape, dig into, or otherwise grip the rib to mitigate pullout, and
• wherein the first retention clip and the second retention clip cooperate to define a flared opening to the cavity configured to guide a distal end of the rib into the cavity.