| 摘要 |
A plastic fastener comprising a head portion to be contacted with a given panel, a leg portion to be inserted through a fitting hole bored in the panel, a plurality of fin-like engaging projections disposed in the stepped manner in the direction of the length on the outer surface of the leg portion is improved so as to be inserted in its correct posture through the fitting hole and brought into fast attachment without any play to the panel. The improvement is accomplished by providing the leg portion with at least two guide ridges having at each terminal edge thereof an engaging ridge.
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