{"product_id":"gibraltar-z9283-structural-flat-washer-1-1-2-in-alloy-steel","title":"Gibraltar Z9283 Structural Flat Washer 1-1\/2 in Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GIBRALTAR Z9283 is a structural flat washer designed for use with 1-1\/2 inch screws and bolts in heavy-duty fastening applications. Manufactured from alloy steel with a zinc yellow dichromate finish, this washer provides corrosion resistance and a hardness rating of Rockwell C43 to C49, making it suitable for high-load structural connections. The 1-9\/16 inch inside diameter, 3 inch outside diameter, and 1\/4 inch thickness conform to standard structural washer geometry. Licensed trades and contractors working with structural steel assemblies will find this washer meets the dimensional and hardness requirements typical of load-bearing connections.\u003c\/p\u003e\u003cp\u003eThis washer is used in structural steel framing, heavy equipment mounting, and industrial fastening assemblies where standard flat washers do not provide sufficient load distribution. The large outside diameter spreads clamping force across a wider bearing surface, reducing the risk of fastener pull-through under high tension. It is appropriate for both new construction and retrofit applications in commercial and industrial settings where alloy steel hardware is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlloy steel construction with Rockwell C43-C49 hardness for high-load structural use\u003c\/li\u003e\n\u003cli\u003eZinc yellow dichromate finish provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003e1-9\/16 inch inside diameter fits 1-1\/2 inch nominal screw or bolt size\u003c\/li\u003e\n\u003cli\u003e3 inch outside diameter distributes clamping load over a wide bearing surface\u003c\/li\u003e\n\u003cli\u003e1\/4 inch thickness meets structural washer geometry requirements\u003c\/li\u003e\n\u003cli\u003eInch measurement system; compatible with standard SAE fastener sizing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style structural flat washer for use with 1-1\/2 inch nominal screw and bolt sizes in alloy steel fastening applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by ironworkers, structural contractors, or licensed mechanical trades working under applicable building codes. Always de-energize or depressurize any associated system before accessing structural connection points. Use calibrated torque equipment when final tightening to engineered specifications is required. Inspect washer seating and finish condition before installation to ensure full bearing contact.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Type\u003c\/strong\u003e: Structural\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 1-9\/16 inches (1.5625 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: Rockwell C43-C49\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.36 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161807\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GIBRALTAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: Z9283\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51700950892850,"sku":"Z9283","price":22.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fbbf818ac0ec427c4d94f0cdbef87f31.jpg?v=1788395816","url":"https:\/\/voomisupply.com\/products\/gibraltar-z9283-structural-flat-washer-1-1-2-in-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}