{"product_id":"stewart-fastener-j2548mrcz-1-4-20x3-round-head-machine-screw-zinc","title":"Stewart Fastener J2548MRCZ 1\/4-20x3 Round Head Machine Screw Zinc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STEWART FASTENER J2548MRCZ is a round head combination-drive machine screw in a 1\/4-20 thread size with a 3-inch length, finished in zinc plating for corrosion resistance. This fastener features a combination drive, accepting both slotted and Phillips drivers for flexibility on the job. Sold individually, each unit is drawn from a jar of 100. Trade professionals across HVAC, plumbing, electrical, and general mechanical work rely on zinc-plated machine screws like this one for secure, code-appropriate mechanical connections in panel assemblies, equipment mounting, and structural bracketing.\u003c\/p\u003e\n\u003cp\u003eThis screw suits a wide range of light commercial and residential trade applications where a 1\/4-20 coarse thread and 3-inch grip length are specified. Common uses include equipment panel fastening, junction box assembly, ductwork bracketing, and general mechanical assembly where a round head profile and combination drive are preferred for accessibility and tool compatibility.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 coarse thread for broad compatibility with standard tapped holes and nuts\u003c\/li\u003e\n  \u003cli\u003e3-inch length provides adequate grip for thicker substrates and stacked materials\u003c\/li\u003e\n  \u003cli\u003eRound head profile distributes clamping load across the surface\u003c\/li\u003e\n  \u003cli\u003eCombination drive accepts slotted or Phillips drivers, reducing tool changeover\u003c\/li\u003e\n  \u003cli\u003eZinc plating provides basic corrosion resistance for indoor and light-duty applications\u003c\/li\u003e\n  \u003cli\u003eSold per each from a jar of 100, allowing single-unit purchase or bulk stocking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4-20 coarse thread round head machine screw suitable for use with any tapped hole, hex nut, or coupling nut conforming to the 1\/4-20 UNC thread standard.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is appropriate for qualified trade technicians following applicable mechanical and electrical codes. De-energize and lock out equipment before fastening panels or covers on electrical or HVAC assemblies. Use the correct driver bit to avoid cam-out and head damage. Do not overtorque into tapped aluminum or plastic housings without referencing the equipment manufacturer's fastener specification.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Style\u003c\/strong\u003e: Round Head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Combination (Slotted and Phillips)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100 per jar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 662352111683\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: STEWART FASTENER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: J2548MRCZ\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STEWART FASTENER","offers":[{"title":"Default Title","offer_id":51346640273714,"sku":"J2548MRCZ","price":38.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310552179.jpg?v=1782086319","url":"https:\/\/voomisupply.com\/products\/stewart-fastener-j2548mrcz-1-4-20x3-round-head-machine-screw-zinc","provider":"Voomi Supply","version":"1.0","type":"link"}