| 摘要 |
A captive panel fastener includes a head, a shank, internal threads, and external, longitudinally extending slots extending from near the head to near the shank's outer end. A washer is provided and the washer has inwardly extending prongs that fit into the longitudinally extending slots when the washer is slipped onto the fastener. The outer end of the shank, past the ends of the slots, has a thin walled portion which, after the washer is in place, is deformed with a forming tool so that the wall is pushed outward. The outwardly deformed end wall blocks the ends of the longitudinally extending slots, thereby holding the washer onto the fastener. The retaining washer captures the fastener on the panel or other surface through which the fastener has been extended. A small washer may be utilized between the outer ends of the slots and the deformed end walls to block the ends of the slots, thereby allowing the end walls to indirectly hold the larger retention washer. A retaining ring with inwardly extending tangs may be utilized to engage the shank of the fastener through the longitudinally extending slots and hold the fastener so that its outer end does not extend through the panel. The retaining ring is held in place by a thin plate that is affixed to the side of the panel or other surface through which the fastener is to be extended.
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