| 摘要 |
A fastener is configured for engagement upon a panel having a panel opening, and for engaging a mating fastener through the panel opening. The fastener includes a body having an axis of rotation, a peripheral edge, a main portion and a panel end. At least two lugs project from the peripheral edge at the panel end and are the points of fixed engagement with the panel without causing yielding of the panel or of the fastener. In another embodiment, a fastener system includes a fastener having a body with at least two lugs projecting from the body, a panel with an opening and at least two pocket formations disposed relative to the opening to receive the lugs and place the body in registry with the opening. The lugs lockingly engage the pocket formations as the body is rotated, t he engagement being achieved without causing yielding the fastener or the panel.
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