{"product_id":"value-collection-r52000830-4-40-unc-machine-screw","title":"Value Collection R52000830 4-40 Unc Machine Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION R52000830 is a pan head machine screw designed for secure fastening in light-duty mechanical and electrical assemblies. Threaded to 4-40 UNC specifications, it measures 0.75 inches in length under the head. The pan head profile and Phillips drive make it compatible with standard power and hand tools. Constructed from Grade J82 steel with a zinc-plated finish, the screw resists corrosion in typical indoor environments. An external tooth washer style is integrated at the bearing surface, providing additional resistance to loosening under vibration.\u003c\/p\u003e\u003cp\u003eThis fastener is suited for panel assembly, electrical enclosures, control boards, and light structural connections where a 4-40 UNC thread form is specified. The zinc-plated finish makes it appropriate for indoor or protected environments. It is commonly used by electricians, HVAC technicians, and equipment assemblers when securing covers, brackets, and terminal components in residential and commercial equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC thread form for compatibility with standard tapped holes in that size\u003c\/li\u003e\n\u003cli\u003e0.75 inch length under head suits shallow to medium-depth fastening applications\u003c\/li\u003e\n\u003cli\u003ePhillips drive accepts both manual and powered screwdrivers\u003c\/li\u003e\n\u003cli\u003eGrade J82 steel construction provides reliable tensile strength for light-duty use\u003c\/li\u003e\n\u003cli\u003eZinc-plated finish adds corrosion resistance for indoor service environments\u003c\/li\u003e\n\u003cli\u003eExternal tooth washer style resists fastener back-out under vibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 4-40 UNC pan head machine screw suitable for any application requiring that thread form, drive style, and 0.75 inch under-head length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a Phillips screwdriver or driver bit matched to the pan head size. De-energize any electrical equipment before fastening or removing screws in panel or control board applications. Apply only hand-tight or low-torque power driving to avoid stripping the 4-40 thread in tapped aluminum or plastic substrates. Follow applicable NEC or equipment manufacturer guidelines when fastening within electrical enclosures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style\u003c\/strong\u003e: Pan Head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Phillips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Style\u003c\/strong\u003e: External Tooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Grade J82 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\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: R52000830\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51696817078578,"sku":"R52000830","price":876.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d6f52229275ac7b8d4c949a1b4a845fb.jpg?v=1788346589","url":"https:\/\/voomisupply.com\/products\/value-collection-r52000830-4-40-unc-machine-screw","provider":"Voomi Supply","version":"1.0","type":"link"}