Details

• Brand:

  

  

• SKU:

  W520834-S439

• Positions: Left, Right, Rear
• Other Names:

  Bracket Nut, Mount Plate Nut, Support Brace Nut, Support Strap Nut, Bumper Face Bar Nut, Tank Strap Nut, Nut Spring

• Description:

  The W520834-S439 is a genuine Ford spring nut built on the HM1 nut base, the standardized clip-on spring-steel retaining nut Ford uses across many bodies and brackets to hold a threaded fastener captive where there is no room for a conventional locknut. Dealer catalogs carry it under the dominant name Nut - Spring, and depending on the diagram you are reading it can also appear simply as Spring Nut. Documented sample applications where this exact service number is cataloged include the Ford E-350/E-350 Super Duty, F-150 and Ranger, along with the Lincoln Navigator and the Mercury Monterey and Mountaineer; treat those as representative examples rather than a complete vehicle list, because Ford reuses one spring nut across many model years and assemblies and does not publish a single finite fitment chart for it. When a spring nut like this is missing, loose, or corroded, the panel, bracket, shield or trim piece it secures rattles, shifts, or works its way loose over time, and the captive thread it was meant to provide is gone, so the mating screw or bolt has nothing to bite into. Replacing it with the correct genuine spring nut restores the proper grip and keeps the assembly tight. Because suffix codes denote a specific size, material and finish, confirm fit for your exact vehicle by VIN before ordering rather than relying on the sample applications above.

• Replaces:

  n801107s36, n801107s439, w520834s426

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