{"product_id":"value-collection-mpfi0-400310-100bx-4-40-machine-screw-100pk","title":"Value Collection MPFI0-400310-100BX 4-40 Machine Screw 100pk","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MPFI0-400310-100BX is a 4-40 UNC machine screw with a flat head and Phillips drive, sold in a box of 100. Made from Grade 2 steel with a zinc-plated finish, this fastener offers reliable corrosion resistance for light- to medium-duty assembly work. At 5\/16 inches in overall length with no washer, it seats flush when countersunk into metal, plastic, or composite panels. Electricians, HVAC technicians, and panel assemblers commonly use 4-40 hardware when securing terminal blocks, cover plates, and small electrical enclosures. The zinc plating provides a protective barrier suitable for indoor environments where moisture exposure is minimal.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for residential and light commercial applications where 4-40 UNC thread engagement is required. Typical use cases include securing low-voltage control boards, equipment cover panels, switchbox hardware, and instrument enclosures. The flat head profile allows the fastener to sit flush or slightly below the surface when installed into a properly countersunk hole, keeping clearances tight in confined assemblies. The 100-count box format makes it practical for service vans and shop stock alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread form for precise engagement with standard tapped holes\u003c\/li\u003e\n  \u003cli\u003eFlat head with Phillips drive for flush or countersunk installation\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction provides adequate tensile strength for light assembly\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish resists corrosion in typical indoor service environments\u003c\/li\u003e\n  \u003cli\u003e5\/16 inch overall length with no washer for low-profile seating\u003c\/li\u003e\n  \u003cli\u003e100-piece box quantity supports bulk service and shop restocking needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in any application requiring a 4-40 UNC flat head Phillips machine screw at 5\/16 inches in length, including electrical panel covers, control board mounting, and general light-duty mechanical assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by hand or with a Phillips screwdriver; a power driver with adjustable torque is acceptable to avoid stripping the Grade 2 head. Ensure the mating hole is properly tapped to 4-40 UNC or fitted with a compatible threaded insert before driving the fastener. For flush seating, the receiving material should be countersunk to match the flat head angle. De-energize any electrical equipment before accessing panels or enclosures where these fasteners are being installed or removed.\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\u003eHead Type\u003c\/strong\u003e: Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Phillips\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5\/16 inches\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: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\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\u003ePackage Quantity\u003c\/strong\u003e: 100 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: MPFI0-400310-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693359202610,"sku":"MPFI0-400310-100BX","price":785.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a68b8cde766113e782f30d56e4c156c3.jpg?v=1788311186","url":"https:\/\/voomisupply.com\/products\/value-collection-mpfi0-400310-100bx-4-40-machine-screw-100pk","provider":"Voomi Supply","version":"1.0","type":"link"}