{"product_id":"value-collection-msri0-400870-100bx-4-40-x-7-8-in-round-head-screw","title":"Value Collection MSRI0-400870-100BX 4-40 X 7\/8 in Round Head Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MSRI0-400870-100BX is a 4-40 unified coarse thread machine screw designed for precision fastening in light mechanical assemblies. It features a round head profile and slotted drive, making it compatible with standard flat-blade screwdrivers. Manufactured from alloy steel with a zinc-plated finish, it provides corrosion resistance suitable for indoor and light-duty applications. At 7\/8 inches in length measured under the head and a nominal thread diameter of No. 4, it fits common tapped holes in sheet metal, electronic enclosures, and small equipment housings. This fastener meets ASME B18.6.3 dimensional standards. Sold in a minimum order quantity of 100 pieces per box.\u003c\/p\u003e\n\u003cp\u003eThis machine screw is suited for use in electrical panels, HVAC control boards, small appliance housings, and precision instrument enclosures where a low-profile round head and slotted drive are required. It is a standard inch-system fastener and is commonly specified by electricians, HVAC technicians, and mechanical assemblers working on equipment that calls for a 4-40 threaded fastener without a washer face. The zinc plating makes it appropriate for dry or mildly humid indoor environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 unified coarse thread for use in standard tapped holes and threaded inserts\u003c\/li\u003e\n  \u003cli\u003eRound head profile with slotted drive accepts standard flat-blade screwdrivers\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction provides strength suitable for light mechanical and electrical assembly\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish for corrosion resistance in indoor environments\u003c\/li\u003e\n  \u003cli\u003e7\/8 inch length measured under the head per ASME B18.6.3\u003c\/li\u003e\n  \u003cli\u003eNo washer face — clean seating against flat surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard inch-system machine screw for any application requiring a 4-40 threaded fastener with a round head and slotted drive, conforming to ASME B18.6.3 dimensional requirements.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with a flat-blade screwdriver sized to fit the slot without slipping, which can damage the head or surrounding material. Ensure the mating tapped hole or threaded insert is clean and free of debris before driving. Do not overtighten small-diameter machine screws, as alloy steel fasteners at No. 4 size can shear if torque is excessive. Power down any electrical equipment before fastening or removing screws inside panels or enclosures.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 7\/8 inches\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: Alloy Steel\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\u003eFastener Standard\u003c\/strong\u003e: ASME B18.6.3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100 pieces\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: MSRI0-400870-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51700600013106,"sku":"MSRI0-400870-100BX","price":715.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1ed54002961731c5a60476ad98e64970.jpg?v=1788392529","url":"https:\/\/voomisupply.com\/products\/value-collection-msri0-400870-100bx-4-40-x-7-8-in-round-head-screw","provider":"Voomi Supply","version":"1.0","type":"link"}