Part number 4953347, or 495334-7 was formerly made by Intersil (now owned by Renesas) that has become difficult to source. I could not confirm its production status but I suspect it was discontinued.
It is a shoulder washer, plastic polyamide, with hole diameter of 0.156", thickness of 0.05", shoulder diameter of 0.25" and outside diameter of 0.375".
Our best alternative at this time is RPC6413-ND, however this is unfortunately not a direct cross-reference part, so it may not be appropriate for all applications.