{"product_id":"rivetking-fbup-5-p500-blind-rivet-backup-washer-size-5-500pk","title":"Rivetking FBUP-5\/P500 Blind Rivet Backup Washer Size 5 500pk","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe RIVETKING FBUP-5\/P500 is a stainless steel round blind rivet backup washer designed for Size 5 rivet applications. It provides a solid bearing surface behind the blind rivet head, distributing clamp load across the base material and reducing pull-through in thin or soft substrates. With an inside diameter of 0.156 inches, an outside diameter of 0.437 inches, and a thickness of 0.0625 inches (1\/16 inch), this washer is sized to work with 5\/32 inch rivet diameters. The stainless steel construction resists corrosion in wet or outdoor environments. This package contains 500 washers. Installers in HVAC, plumbing, sheet metal, and general construction use these where rivet joint integrity is critical.\u003c\/p\u003e\n\u003cp\u003eBlind rivet backup washers are used wherever a standard rivet head needs additional bearing support on the blind side or accessible side of a joint. Common applications include thin-gauge sheet metal panels, HVAC ductwork assemblies, enclosure fabrication, and light structural connections. The Size 5 designation matches the 5\/32 inch rivet diameter standard used across many tool and fastener platforms. The 500-piece pack suits service vans, shop bins, and production runs that require consistent inventory of a single size.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless steel construction provides corrosion resistance for indoor and outdoor applications\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 0.156 inches fits 5\/32 inch rivet shank with minimal clearance\u003c\/li\u003e\n  \u003cli\u003eOutside diameter of 0.437 inches spreads clamp load to reduce material pull-through\u003c\/li\u003e\n  \u003cli\u003eThickness of 0.0625 inches (1\/16 inch) keeps the washer profile low in tight assemblies\u003c\/li\u003e\n  \u003cli\u003eSize 5 designation aligns with standard rivet sizing conventions for easy cross-referencing\u003c\/li\u003e\n  \u003cli\u003e500-piece pack provides job-ready quantity for ongoing service or production use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Size 5 blind rivets having a 5\/32 inch shank diameter, following standard rivet sizing conventions used across trade and industrial fastener applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlace the backup washer over the rivet shank before inserting through the base material so the washer seats flat against the material surface on the shop head side. Ensure the substrate surface is clean and flat for proper washer seating before setting the rivet. Use a standard rivet tool rated for the rivet material and size being installed. No special tooling beyond a conventional blind rivet tool is required for this washer.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize Code\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRivet Diameter\u003c\/strong\u003e: 5\/32 inch (0.156 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.156 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.437 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0625 inches (1\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 500 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 8.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RIVETKING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: FBUP-5\/P500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RIVETKING","offers":[{"title":"Default Title","offer_id":52065308836146,"sku":"FBUP-5\/P500","price":137.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2e986f088a51dd281dfd40deecab8ffb_107b49b6-0c3b-470e-ba23-37d363c0f34f.jpg?v=1790044697","url":"https:\/\/voomisupply.com\/products\/rivetking-fbup-5-p500-blind-rivet-backup-washer-size-5-500pk","provider":"Voomi Supply","version":"1.0","type":"link"}