{"product_id":"value-collection-r52000826-4-40-x-3-8-in-pan-head-screw","title":"Value Collection R52000826 4-40 X 3\/8 in Pan Head Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION R52000826 is a 4-40 pan head Phillips machine screw designed for precision fastening in light-duty mechanical and electrical assemblies. Manufactured from steel with a zinc-plated finish, this screw meets ASME B18.13a and SAE J82 standards, which define dimensional and material requirements for slotted and recessed pan head screws. The 4-40 thread designation indicates a No. 4 diameter with 40 threads per inch, making it a fine-thread fastener suited for thin stock and close-tolerance applications. Length under head measures 3\/8 inches. An external tooth washer style is integrated into the design, providing added locking action against loosening under vibration.\u003c\/p\u003e\u003cp\u003eThis screw is commonly used in electronic enclosures, control panels, HVAC equipment cabinets, electrical junction boxes, and light-gauge sheet metal assemblies. Electricians, HVAC technicians, and electronics assembly professionals reach for 4-40 screws when working with terminal boards, control boards, and small bracket hardware where a compact, corrosion-resistant steel fastener is required. The zinc plating provides moderate corrosion resistance suitable for indoor and protected environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 thread size with 40 threads per inch for fine-thread engagement in thin material\u003c\/li\u003e\n\u003cli\u003ePan head profile with Phillips drive for positive bit engagement and flush-to-low installation\u003c\/li\u003e\n\u003cli\u003eZinc-plated steel construction offers moderate corrosion resistance for indoor applications\u003c\/li\u003e\n\u003cli\u003eExternal tooth washer style adds vibration-resistant locking without a separate lock washer\u003c\/li\u003e\n\u003cli\u003eMeets ASME B18.13a and SAE J82 dimensional and material standards\u003c\/li\u003e\n\u003cli\u003eLength under head of 3\/8 inches suits standard light-gauge panel and bracket fastening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard inch-series machine screw for use in any application requiring a 4-40 thread, pan head, Phillips drive fastener per ASME B18.13a and SAE J82 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a Phillips head screwdriver or bit sized for a No. 4 screw; using an oversized driver bit can damage the recess. Always thread into a pre-tapped hole or a matching 4-40 nut; do not force-thread into untapped stock. De-energize any control board or electrical assembly before driving or removing fasteners near live components. Follow applicable NEC guidelines when fastening hardware inside 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type\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\u003eLength Under Head\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWasher Style\u003c\/strong\u003e: External Tooth\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 B18.13a, 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\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: R52000826\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720716517682,"sku":"R52000826","price":590.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8f56f67a01d9a716394fa5f6e15601ed.jpg?v=1788568130","url":"https:\/\/voomisupply.com\/products\/value-collection-r52000826-4-40-x-3-8-in-pan-head-screw","provider":"Voomi Supply","version":"1.0","type":"link"}