{"product_id":"podavelle-3an-hardline-nut-sleeve-for-3-16-od-tubing-2-sets-304-stainless-37-flare","title":"Podavelle 3AN Hardline Nut \u0026 Sleeve for 3\/16\" OD Tubing — 2 Sets, 304 Stainless, 37° Flare","description":"\u003cp\u003e\u003cstrong\u003ePodavelle 3AN stainless steel nuts and sleeves convert 3\/16\" hardline into a -3 AN 37° flare connection for reliable, corrosion-resistant fittings.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese two complete sets (two nuts and two sleeves) are precision-machined from 304 stainless steel to join 3\/16\" outside-diameter hardline with -3 AN (3\/8-24 UNF) fittings. Designed for applications that require a 37° flare profile, the kit provides the hardware needed to finish a flared hardline end, whether for fuel, brake, transmission, or custom fluid routing. Note that the tube must be flared to 37° with the proper flaring tool before assembly; professional installation is recommended.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit create a leak-resistant AN connection?\u003c\/h3\u003e\n\u003cp\u003eThe nut and sleeve clamp a properly flared 3\/16\" hardline into the -3 AN fitting, forming a metal-to-metal seal at the 37° flare face. Stainless components resist corrosion and hold torque reliably when installed to specification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e37° flare geometry compatible with -3 AN fittings\u003c\/li\u003e\n  \u003cli\u003e304 stainless steel resists rust and chemical exposure\u003c\/li\u003e\n  \u003cli\u003ePrecision thread (3\/8-24 UNF) for consistent tightening\u003c\/li\u003e\n  \u003cli\u003eTwo sets included for dual-line or backup installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat preparation and tools are required before assembly?\u003c\/h3\u003e\n\u003cp\u003eYour hardline must be cut square and flared to a 37° angle with an appropriate hardline flaring tool. Deburring and cleaning the tubing end before installing the sleeve and nut ensures a proper seal and prevents abrasion or leaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardline cutter and deburring tool for clean ends\u003c\/li\u003e\n  \u003cli\u003e37° hardline flaring tool (compatible with AN flare angle)\u003c\/li\u003e\n  \u003cli\u003eProper torque wrench and AN-compatible wrenches for assembly\u003c\/li\u003e\n  \u003cli\u003eUse of thread-friendly sealants only where recommended by installer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these parts fit my system and what materials are they suited for?\u003c\/h3\u003e\n\u003cp\u003eThese components are sized for 3\/16\" outside-diameter hardline and standard -3 AN fittings (3\/8-24 UNF thread). Manufactured from 304 stainless steel, they work well with many non-reactive fluids and in environments where corrosion resistance is required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 3\/16\" OD hardline\/tubing\u003c\/li\u003e\n  \u003cli\u003eDesigned for -3 AN (3\/8-24 UNF) threaded fittings\u003c\/li\u003e\n  \u003cli\u003e304 stainless steel for general corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eNot intended for unsupported or undersized tubing without adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I approach installation and safety?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires accurate flaring and correct torque. If you are unfamiliar with AN flare practice or working with hardline, have a professional perform the flare and assembly to ensure safe, leak-free connections.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify flare angle and seat before final tightening\u003c\/li\u003e\n  \u003cli\u003eDo not over-tighten; use correct torque values for AN fittings\u003c\/li\u003e\n  \u003cli\u003eInspect seals and threads for damage before reuse\u003c\/li\u003e\n  \u003cli\u003eIf in doubt, consult a technician experienced with hardline and AN systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Podavelle 3AN nut and sleeve kit is intended for mechanics, fabricators, and serious DIYers installing or repairing -3 AN hardline systems using 3\/16\" tubing. It suits automotive and motorsport plumbing, custom fluid routing projects, and maintenance work where stainless fittings are preferred for durability and corrosion resistance. This product supplies the hardware only—flaring tools, sealants, and professional installation services are recommended if you lack experience with AN-style hardline connections.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these nuts and sleeves fit 3\/16\" hardline?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They are sized for 3\/16\" outside-diameter hardline and mate to -3 AN (3\/8-24 UNF) fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is a flaring tool included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The tube must be flared to 37° with a proper flaring tool; professional installation is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Podavelle","offers":[{"title":"Default Title","offer_id":55161681674583,"sku":"B0CKBR7SHS","price":29.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/podavelle-front-view-nuts-sleeves.jpg?v=1790331260","url":"https:\/\/britishgarage.co.uk\/products\/podavelle-3an-hardline-nut-sleeve-for-3-16-od-tubing-2-sets-304-stainless-37-flare","provider":"British Garage","version":"1.0","type":"link"}