When riveting thin aluminum body panels, plastic interior tins, or Lexan windows, the rivet head alone often doesn't provide enough surface area to prevent "pull-through." Under the high-vibration and aerodynamic loads of racing, rivets can easily tear through soft materials, leading to loose panels and mid-race failures.
The Longacre 52-36025 Aluminum Back Up Washers are the professional's solution for creating a rock-solid mechanical bond. Specifically designed to slide over the tail of a 1/8" pop rivet before it is pulled, these washers act as a structural anchor on the backside of the panel. They bridge the gap in oversized or worn holes and ensure that the clamping force is distributed evenly, protecting your bodywork and keeping your car together lap after lap.
Key Features
-
Precision 1/8" Fitment: Sized specifically for standard 1/8-inch rivets, providing a snug fit that ensures the washer stays centered for maximum holding power.
-
Lightweight Aluminum Construction: Shaves weight where it counts. Using aluminum washers instead of steel prevents unnecessary "ounces" from adding up across a full body hung with hundreds of rivets.
-
Corrosion Resistance: Unlike steel washers that can rust and "bleed" onto your paint or wraps, these aluminum washers stay clean and maintain their structural integrity in all weather conditions.
-
Tear-Through Prevention: Dramatically increases the footprint of the rivet's "shop head" (the expanded tail), making it nearly impossible for the rivet to pull back through fiberglass, plastic, or thin aluminum.
-
Bulk Shop Value: Sold in high-quantity packs to ensure you have enough matching hardware to complete a full interior tin project or body hang without running back to the hardware store.
