{"product_id":"value-collection-r52001079-flat-head-machine-screw-1-4-20","title":"Value Collection R52001079 Flat Head Machine Screw 1\/4-20","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION R52001079 is a flat head slotted machine screw designed for general-purpose fastening in metal and hard-material assemblies. It features a 1\/4-20 unified coarse thread, an overall length of 3.5 inches, and a countersunk flat head profile that sits flush with or below the mating surface when installed. The screw is manufactured from steel with a zinc plating finish that provides basic corrosion resistance for indoor and light-duty applications. It conforms to ASME B18.6.3 and SAE J82 dimensional and grade standards. This fastener is installed by maintenance technicians, millwrights, and general tradespeople using a standard slotted flat-blade screwdriver or bit.\u003c\/p\u003e\u003cp\u003eThis screw is suited for mechanical assemblies, equipment enclosures, brackets, and structural subassemblies where a flush-seating fastener is required. The 1\/4-20 thread pitch is a widely used coarse-thread standard in both light industrial and commercial maintenance work. The full-length thread engagement along the 3.5-inch shank makes it practical for thicker stack-ups or through-fastening applications. No washer is included or specified with this fastener, consistent with its flat head countersunk design.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFlat countersunk head profile seats flush with the mating surface\u003c\/li\u003e\n\u003cli\u003eSlotted drive accepts standard flat-blade screwdriver or bit\u003c\/li\u003e\n\u003cli\u003e1\/4-20 unified coarse thread for broad compatibility with standard tapped holes\u003c\/li\u003e\n\u003cli\u003eZinc-plated steel construction for basic corrosion resistance\u003c\/li\u003e\n\u003cli\u003eConforms to ASME B18.6.3 and SAE J82 standards\u003c\/li\u003e\n\u003cli\u003eNo-washer style; overall length equals length under head at 3.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 1\/4-20 coarse-thread machine screw for use in tapped holes or with standard 1\/4-20 hex nuts and threaded inserts in general mechanical and industrial fastening applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis fastener is installed by qualified tradespeople or maintenance technicians using a flat-blade screwdriver or slotted bit sized to the head recess. The mating material should have a properly sized and tapped 1\/4-20 hole or a pre-installed threaded insert; cross-threading will damage both the screw and the tapped surface. When used in countersunk applications, verify the countersink angle matches the flat head geometry before final seating. Do not over-torque; follow applicable equipment manufacturer torque specifications for the assembly being serviced.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Flat (Countersunk)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Slotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Style\u003c\/strong\u003e: Without Washer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: J82\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME B18.6.3, SAE J82\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: 0.038 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161504\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: R52001079\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699953107250,"sku":"R52001079","price":3084.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9ee324327f1c6b7a1f2a9a1eec30e6e4.jpg?v=1788383973","url":"https:\/\/voomisupply.com\/products\/value-collection-r52001079-flat-head-machine-screw-1-4-20","provider":"Voomi Supply","version":"1.0","type":"link"}