{"product_id":"value-collection-0406u-no-4-round-head-sheet-metal-screw","title":"Value Collection 0406U No. 4 Round Head Sheet Metal Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 0406U is a No. 4 round head sheet metal screw with a Type U point, designed for fastening thin sheet metal, light-gauge steel components, and similar materials in mechanical and fabrication applications. The screw measures 3\/8 inches in length under the head and is manufactured from Grade 1016\/1024 carbon steel with a zinc finish for corrosion resistance. The Type U point is a blunt, interference-fit drive type commonly used for permanent or semi-permanent fastenings into pre-punched or drilled holes. This fastener is installed by electricians, HVAC technicians, sheet metal workers, and general tradespeople in light-duty assembly work.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in residential and commercial construction, HVAC duct assembly, electrical enclosures, appliance fabrication, and other applications requiring a compact No. 4 fastener in thin-gauge metal. Its round head profile provides a low-profile bearing surface appropriate for surface-mounted connections where flush seating is not required. The zinc finish offers baseline protection in indoor and sheltered environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNo. 4 thread size with 3\/8-inch length under head for compact fastening applications\u003c\/li\u003e\n  \u003cli\u003eType U blunt point designed for pre-punched or drilled holes in sheet metal\u003c\/li\u003e\n  \u003cli\u003eRound head profile provides a broad bearing surface for surface-mounted installations\u003c\/li\u003e\n  \u003cli\u003eGrade 1016\/1024 carbon steel construction meets AISI 1016 material standards\u003c\/li\u003e\n  \u003cli\u003eZinc finish provides corrosion resistance in indoor and sheltered environments\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B18.6.3 and ASME B18.6.4 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard No. 4 round head Type U sheet metal screw suitable for use in pre-punched or drilled holes in light-gauge sheet metal assemblies, HVAC ductwork, electrical enclosures, and similar thin-material fastenings where ASME B18.6.3 and B18.6.4 compliant fasteners are specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSheet metal screws of this type are installed by sheet metal workers, HVAC technicians, and electricians using a manual or power screwdriver with the appropriate round head bit. Always ensure the receiving hole is properly pre-punched or drilled to the correct diameter for Type U point engagement before driving. Avoid over-torquing, which can strip the thin-gauge material or compromise the fastener seating. Follow applicable SMACNA or local mechanical codes when fastening ductwork components.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: No. 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Type U\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 1016\/1024\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: AISI 1016, ASME B18.6.3, ASME B18.6.4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161506\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 0406U\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51702084043058,"sku":"0406U","price":8737.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e24e33ad5ce82e7963447936563550bf.jpg?v=1788408933","url":"https:\/\/voomisupply.com\/products\/value-collection-0406u-no-4-round-head-sheet-metal-screw","provider":"Voomi Supply","version":"1.0","type":"link"}