Description
Back-up washers are essential when working with pop rivets in structural or high-stress applications—they distribute clamping force across a wider surface area and prevent the rivet from pulling through softer materials like aluminum or composite panels. Whether you’re fabricating a custom roll cage, securing aerodynamic components, or assembling sheet metal assemblies, having a reliable supply of properly sized washers eliminates the frustration of failed rivets and ensures consistent, professional results. This bulk pack of 250 aluminum washers matches 1/8″ pop rivets perfectly, giving you a dependable fastening solution for race car builds and automotive repair work.
- 1/8″ diameter hole
- 3/8″ outer diameter
- .055″ thickness
- Aluminum construction
- Quantity: 250 pieces
- Designed for 1/8″ pop rivets
- JJ Motorsports Part RCFS-18250









