{"product_id":"304-stainless-steel-countersunk-fisheye-concave-washers-100pcs","title":"304 Stainless Steel Countersunk Fisheye Concave Washers 100pcs","description":"\u003cp\u003eUpgrade your fastening projects with these \u003cstrong\u003eHUXUAN 304 Stainless Steel Bowl-Type Conical (Fish Eye) Washers\u003c\/strong\u003e — precision-forged concave-convex countersunk gaskets engineered for even load distribution and long-lasting performance. Whether you're tackling industrial assembly, construction work, furniture installation, or home DIY repairs, these washers deliver professional-grade reliability in every application. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose These Concave Countersunk Washers?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuperior Corrosion \u0026amp; Rust Resistance:\u003c\/strong\u003e Crafted from high-grade 304 stainless steel, these washers effectively resist moisture, oxidation, and mild chemical exposure — ideal for outdoor, humid, or coastal environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEven Pressure Dispersion:\u003c\/strong\u003e Precision cold-forging creates a true concave profile that evenly distributes bolt and screw load across the contact surface, preventing fasteners from embedding into soft materials and protecting workpiece surfaces from dents.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Tensile Structural Strength:\u003c\/strong\u003e Solid one-piece forged construction with a reinforced edge design meets heavy-duty industrial and construction fastening demands with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBurr-Free Safe Installation:\u003c\/strong\u003e High-precision stamping and mirror-polishing produce smooth, burr-free rounded edges — no risk of scratching work surfaces or hands during installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Wide Compatibility:\u003c\/strong\u003e Standardized inner diameter fits most common screws, bolts, and rivets on the market — perfect for professional trades and everyday DIY use alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eHUXUAN\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e304 Stainless Steel (High-Grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eConcave-Convex \/ Fish Eye \/ Bowl-Type Countersunk Washer\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e100 pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eStainless Steel (as shown in images)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThese versatile conical washers are suited for a wide range of uses:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial equipment assembly\u003c\/li\u003e\n  \u003cli\u003eConstruction \u0026amp; structural fastening projects\u003c\/li\u003e\n  \u003cli\u003eFurniture manufacturing \u0026amp; installation\u003c\/li\u003e\n  \u003cli\u003eHome DIY repairs \u0026amp; renovations\u003c\/li\u003e\n  \u003cli\u003eElectrical appliance assembly\u003c\/li\u003e\n  \u003cli\u003eAutomotive maintenance \u0026amp; fabrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePhotos are for reference only and may not reflect actual size — please refer to the size details in the description.\u003c\/li\u003e\n  \u003cli\u003eMinor measurement differences may occur due to manual measuring methods.\u003c\/li\u003e\n  \u003cli\u003eActual color may vary slightly from images due to monitor calibration differences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories Anti-Loosening\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What makes 304 stainless steel countersunk washers better than standard flat washers?\u003c\/h4\u003e\n\u003cp\u003eA: The bowl-type concave-convex (fish eye) profile of these countersunk washers allows the bolt or screw head to sit flush or recessed, distributing load more evenly over the contact area. This prevents fastener embedding into softer surfaces and reduces surface damage — advantages that standard flat washers cannot offer in countersunk applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these conical washers suitable for outdoor or high-moisture environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. These washers are made from 304-grade stainless steel, which offers excellent resistance to rust, oxidation, and mild chemical corrosion. They are well-suited for outdoor construction, coastal environments, plumbing fixtures, and any application where moisture exposure is a concern.\u003c\/p\u003e\n\u003ch4\u003eQ: What screw and bolt sizes are these fisheye washers compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These concave washers feature a standardized universal inner diameter designed to fit most common screws, bolts, and rivets available on the market. For precise size compatibility, please refer to the product images and size chart for the specific inner and outer diameter measurements.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What makes 304 stainless steel countersunk washers better than standard flat washers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The bowl-type concave-convex (fish eye) profile of these countersunk washers allows the bolt or screw head to sit flush or recessed, distributing load more evenly over the contact area. 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