{"product_id":"cerrobrass-ns4-4-brass-flared-refrigeration-nut-1-4-in","title":"Cerrobrass NS4-4 Brass Flared Refrigeration Nut 1\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CERROBRASS NS4-4 is a brass flared tube refrigeration nut designed to secure 45-degree flare connections in refrigeration and air conditioning line sets. Machined from brass, this nut threads onto a flare fitting body and draws a 45-degree flared tube end into a leak-free seal. It is sized for 1\/4-inch outside diameter tubing, one of the most common sizes in light commercial and residential refrigerant circuit work. HVAC technicians and refrigeration mechanics use this style of nut when making or remaking flare joints on copper tubing runs, service ports, and component connections.\u003c\/p\u003e\n\u003cp\u003eThis fitting nut is suited for refrigerant line installations and service work where a 45-degree flare joint is specified. Typical applications include connecting copper tubing to service valves, manifold gauges, condensing unit service ports, and refrigerant-rated components in split systems, package units, and light commercial refrigeration equipment. The compression-style flare end connection makes it straightforward to assemble and disassemble during system servicing without special tooling beyond a standard flare wrench set.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBrass construction provides corrosion resistance and reliable sealing in refrigeration service environments\u003c\/li\u003e\n  \u003cli\u003e45-degree flare angle matches standard refrigeration and HVAC flare fittings\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch tube OD sizing fits the most common small-diameter copper tubing in residential and light commercial systems\u003c\/li\u003e\n  \u003cli\u003eCompression flare end connection allows repeated assembly and disassembly without damage to the nut\u003c\/li\u003e\n  \u003cli\u003eSold individually, suitable for single-joint repairs or new installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service nut for 45-degree flare refrigeration fittings using 1\/4-inch outside diameter copper tubing.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of flare fittings is typically performed by licensed HVAC technicians or refrigeration mechanics. Before making or breaking any refrigerant-side connection, recover refrigerant in accordance with EPA Section 608 requirements and relieve system pressure. Use a calibrated flaring tool to produce a consistent 45-degree flare on the copper tube end before threading the nut. Tighten flare nuts with a properly sized flare wrench to avoid deforming the flare seat  -  do not use adjustable pliers on flare connections.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Refrigeration Nut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Outside Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlare Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connection\u003c\/strong\u003e: Compression (Flare)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27121707\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: CERROBRASS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NS4-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CERROBRASS","offers":[{"title":"Default Title","offer_id":67918458061106,"sku":"NS4-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/df148741e3c623eada045b0206f793c5.jpg?v=1791270052","url":"https:\/\/voomisupply.com\/products\/cerrobrass-ns4-4-brass-flared-refrigeration-nut-1-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}