{"product_id":"value-collection-msri0-400120-100bx-4-40-machine-screw-100-pack","title":"Value Collection MSRI0-400120-100BX 4-40 Machine Screw 100-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MSRI0-400120-100BX is a 4-40 UNC machine screw with a round head and slotted drive, sold in a box of 100. Constructed from alloy steel with a zinc-plated finish, this fastener delivers solid corrosion resistance and mechanical strength in light-duty and precision assembly applications. The 4-40 thread designation indicates a No. 4 screw diameter with 40 threads per inch, a common size in electrical panels, instrument enclosures, and small-component assemblies. Length under head measures 0.125 inches. Electricians, electronics technicians, and mechanical assemblers regularly stock this size for panel work and device mounting.\u003c\/p\u003e\n\u003cp\u003eThese machine screws are suited for residential and commercial electrical enclosures, control panels, instrumentation hardware, and precision metal fabrication. The slotted drive is compatible with standard flat-blade screwdrivers, and the round head profile sits flush above the mating surface without countersinking. The zinc coating provides a baseline level of corrosion protection appropriate for indoor or sheltered applications. The 100-count box quantity supports job-site stocking and bench-stock replenishment for shops running repetitive assembly work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread form — 40 threads per inch on a No. 4 diameter shank\u003c\/li\u003e\n  \u003cli\u003e0.125-inch length under head for tight, low-profile fastening in thin material\u003c\/li\u003e\n  \u003cli\u003eRound head profile — no countersink required\u003c\/li\u003e\n  \u003cli\u003eSlotted drive — compatible with standard flat-blade screwdrivers\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with zinc-plated finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e100-count box for bench stock and repetitive assembly applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 4-40 UNC machine screw for use in electrical enclosures, instrument panels, and light mechanical assemblies requiring a No. 4 round-head slotted fastener.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation does not require special tooling beyond a flat-blade screwdriver sized to the slot. De-energize any electrical enclosure or panel before fastening or removing hardware in accordance with NFPA 70E lockout and tagout procedures. Do not over-torque small-diameter machine screws, as the 4-40 thread is susceptible to thread stripping in softer mating materials such as aluminum or plastic. Use a thread-cutting tap to prepare mating holes in sheet metal to ensure proper thread engagement.\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: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Slotted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.125 inches\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\u003ePackage Quantity\u003c\/strong\u003e: 100 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\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: MSRI0-400120-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51696510140722,"sku":"MSRI0-400120-100BX","price":956.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7b9831b56a3198c9972d4c4372db7a62.jpg?v=1788343393","url":"https:\/\/voomisupply.com\/products\/value-collection-msri0-400120-100bx-4-40-machine-screw-100-pack","provider":"Voomi Supply","version":"1.0","type":"link"}