| 摘要 |
A bumper assembly is provided employing a fastener device which is received in a slotted opening formed in a sheet or plate. The fastener device is constructed such that an elongated flange is inserted through the slotted opening, and the fastener may be rotated through one quarter turn at which point it reaches a stop position and is locked in position. Upon reversal of rotation of the fastener through one quarter turn the rotation reaches a stop position at which point the fastener is easily removed from the slotted opening.
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