{"product_id":"parker-661fhd-4-6-brass-male-to-female-flare-fitting","title":"Parker 661FHD-4-6 Brass Male to Female Flare Fitting","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PARKER 661FHD-4-6 is a brass flare-to-flare reducer fitting designed to connect tubing with different outside diameters in refrigeration, HVAC, and fluid-handling systems. It transitions from a 1\/4-inch tube OD male flare end to a 3\/8-inch tube OD female flare end using a 45-degree flare angle and a 5\/8-18 UNF thread on the female side and a 7\/16-20 UNF thread on the reduced male side. The fitting is rated to 1,400 psi maximum working pressure and handles temperatures up to 250 degrees F. Licensed HVAC technicians and refrigeration mechanics typically install this fitting during line set connections, equipment changeouts, or service valve replacements.\u003c\/p\u003e\u003cp\u003eThis fitting is suited for residential and light commercial HVAC and refrigeration applications where dissimilar tube sizes must be joined using SAE 45-degree flare connections. It is commonly used in copper tubing assemblies for refrigerant lines, fuel gas systems, and hydraulic fluid circuits. The compact 1.2-inch overall length makes it practical for tight service access areas. Compliance with SAE J512, SAE J513, and UL Listing standards confirms it meets recognized industry requirements for flare fittings used in these environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e45-degree SAE flare connection on both ends per SAE J512 and SAE J513\u003c\/li\u003e\n\u003cli\u003eReduces from 3\/8-inch tube OD female flare to 1\/4-inch tube OD male flare\u003c\/li\u003e\n\u003cli\u003eRated to 1,400 psi maximum working pressure\u003c\/li\u003e\n\u003cli\u003eRated to 250 degrees F maximum working temperature\u003c\/li\u003e\n\u003cli\u003eBrass construction provides corrosion resistance for refrigerant and fluid service\u003c\/li\u003e\n\u003cli\u003eUL Listed; meets SAE J512 and SAE J513 standards\u003c\/li\u003e\n\u003cli\u003eCompact overall length of 1.2 inches for tight-access installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for systems using SAE 45-degree flare tube connections with 1\/4-inch and 3\/8-inch tube OD copper tubing.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician or qualified refrigeration mechanic familiar with SAE flare connections. Recover any refrigerant and depressurize the system before disconnecting or installing flare fittings. Use a properly sized flaring tool to ensure a clean, uniform 45-degree flare seat before assembly. Do not over-torque the flare nut, as brass fittings can crack under excessive force; follow standard SAE J512 assembly practices for torque guidance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube OD\u003c\/strong\u003e: 1\/4 x 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlare Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size (Female End)\u003c\/strong\u003e: 5\/8-18 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Thread Size (Male End)\u003c\/strong\u003e: 7\/16-20 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection\u003c\/strong\u003e: Flare x Flare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 1,400 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 250 degrees F (121 degrees C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE J512, SAE J513, UL Listing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27121707\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PARKER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 661FHD-4-6\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51542935863602,"sku":"661FHD-4-6","price":29.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8a278fecef4fc3005767bdf38b14279e.jpg?v=1785911553","url":"https:\/\/voomisupply.com\/products\/parker-661fhd-4-6-brass-male-to-female-flare-fitting","provider":"Voomi Supply","version":"1.0","type":"link"}