{"product_id":"value-collection-r83924449-4-40-x-1-2-in-round-head-slotted-screw","title":"Value Collection R83924449 4-40 X 1\/2 in Round Head Slotted Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION R83924449 is a 4-40 UNC machine screw with a round head and slotted drive, manufactured from 18-8 stainless steel with a bright, uncoated finish. At 1\/2 inch in length measured under the head, this screw is sized for light-duty fastening applications where corrosion resistance matters. The 18-8 stainless alloy provides solid resistance to rust and oxidation in both indoor and outdoor environments. No washer is included or required by design. This fastener is sold in multiples of 100 and is suited for use by electricians, electronics technicians, HVAC service professionals, and general trade workers who need a reliable small-diameter machine screw.\u003c\/p\u003e\n\u003cp\u003eThe R83924449 is commonly used in electrical enclosures, control panels, HVAC equipment covers, and light mechanical assemblies where a 4-40 thread is specified. The round head profile sits above the mating surface and provides a broad bearing area without requiring a countersunk hole. The slotted drive is compatible with standard flat-blade screwdrivers and is widely used in applications where Phillips or hex tooling is not available or preferred. Stainless construction makes this screw appropriate for damp or corrosive service environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread for compatibility with standard 4-40 tapped holes\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch length under head for consistent, predictable engagement depth\u003c\/li\u003e\n  \u003cli\u003e18-8 stainless steel construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eRound head profile provides broad bearing area without countersinking\u003c\/li\u003e\n  \u003cli\u003eSlotted drive works with common flat-blade screwdrivers\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish — no surface treatment to interfere with electrical continuity or grounding paths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard inch-series machine screw for any application requiring a 4-40 UNC threaded fastener with a round head and slotted drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a flat-blade screwdriver sized to the slotted head. Power down and de-energize any electrical equipment before fastening or removing screws in control panels or enclosures, following applicable NEC guidelines. Avoid overtightening small-diameter machine screws, as the 4-40 thread is susceptible to stripping in softer base materials. Confirm thread engagement depth against the mating tapped hole or nut before applying torque.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Slotted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWasher Style\u003c\/strong\u003e: Without Washer\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: 31161504\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: R83924449\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694656946482,"sku":"R83924449","price":969.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e03a7fadf413ce8812e751b2ecfd1b52.jpg?v=1788326828","url":"https:\/\/voomisupply.com\/products\/value-collection-r83924449-4-40-x-1-2-in-round-head-slotted-screw","provider":"Voomi Supply","version":"1.0","type":"link"}