{"product_id":"41inr-316-x-516-nut-12402","title":"41Inr 3\/16 in. x 5\/16 in. Brass Inverted Flare Nut","description":"\u003cp\u003eThe \u003cstrong\u003e41Inr 3\/16 in. x 5\/16 in. Brass Inverted Flare Nut\u003c\/strong\u003e is a brass inverted flare coupling nut that secures the double-flared tube end into the fitting seat. Inverted flare fittings use a 37° internal cone seat (SAE J512) — the opposite geometry from the 45° external seat of SAE refrigeration flare fittings. The two standards are \u003cstrong\u003enot interchangeable\u003c\/strong\u003e; mixing them results in an incomplete seal that will leak under pressure. Always verify flare angle before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlare Standard\u003c\/td\u003e\n\u003ctd\u003eSAE J512 \/ ISO 8434-1 (37° inverted flare)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eSee product title\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eAutomotive brake lines, fuel lines, hydraulic systems\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCritical Note\u003c\/td\u003e\n\u003ctd\u003eNOT interchangeable with SAE 45° flare fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e37° inverted (internal) flare seat — SAE J512 standard for automotive brake and fuel systems\u003c\/li\u003e\n  \u003cli\u003eMetal-to-metal seat — no sealant required; the double-flared tube seals directly on the cone\u003c\/li\u003e\n  \u003cli\u003eVibration-resistant — the inverted flare is the DOT-approved standard for brake line connections\u003c\/li\u003e\n  \u003cli\u003eNOT compatible with SAE 45° flare fittings — different cone angle will not seal\u003c\/li\u003e\n  \u003cli\u003eRequires a double-flare tool to prepare tubing ends correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\u003cp\u003eAutomotive brake line connections (required by code), fuel system tubing, transmission cooler lines, power steering hydraulic lines, heavy equipment hydraulic brake circuits, and any high-vibration fluid circuit specified to the SAE J512 inverted flare standard.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Resources\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/pages\/flare-fittings-sae-45-vs-inverted\"\u003eSAE 45° vs. Inverted Flare — Identification Guide\u003c\/a\u003e — Read before ordering\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/pages\/brass-fitting-types-and-sizes-guide\"\u003eBrass Fitting Types and Sizes Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-References\u003c\/h2\u003e\u003cp\u003eThis part is an equivalent for industry part number \u003cstrong\u003e04335-0305\u003c\/strong\u003e. Searching one of those? This is your match.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":48646784057559,"sku":"12402","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/4152\/8791\/files\/MIDLANDINDUSTRIES_12401.jpg?v=1780316110","url":"https:\/\/apexflowsolutions.com\/products\/41inr-316-x-516-nut-12402","provider":"Apex Flow Solutions","version":"1.0","type":"link"}