{"product_id":"royal-enfield-hex-flange-bolt-m8x125x38-590544a","title":"Hex Flange Bolt M8 × 1.25 × 38 (OEM) for Royal Enfield UCE 350\/500 \u0026 Himalayan 411 (select fitments) – 590544\/A","description":"\u003cp\u003e\u003cspan style=\"color: rgb(249, 16, 16);\"\u003e\u003cstrong\u003eSOLD AS A SET OF 5 PCS \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoyal Enfield 590544\/A\u003c\/strong\u003e (search term: \u003cstrong\u003e590544\u003c\/strong\u003e) is a genuine OEM \u003cstrong\u003eHex Flange Bolt\u003c\/strong\u003e with specification \u003cstrong\u003eM8 × 1.25 × 38\u003c\/strong\u003e. This is a high-use factory fastener found across multiple Royal Enfield assemblies (for example, exhaust\/guards and brake-related sub-assemblies depending on model). Using the correct OEM flange bolt matters because the flange head helps distribute clamping load, and correct thread pitch\/length prevents stripped threads, loosening, and repeat failures after service work.\u003c\/p\u003e\n\u003cp\u003eReplace it when the original bolt is \u003cstrong\u003erounded\u003c\/strong\u003e, rusted\/seized, cross-threaded, stretched, missing after workshop jobs, or when you are rebuilding an assembly and want all fasteners in correct spec. It’s commonly searched as \u003cem\u003eM8 flange bolt\u003c\/em\u003e, \u003cem\u003eRE exhaust bolt\u003c\/em\u003e, \u003cem\u003eguard bolt\u003c\/em\u003e, \u003cem\u003ebrake caliper bolt\u003c\/em\u003e, and by the short search “\u003cstrong\u003e590544\u003c\/strong\u003e”.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you buy:\u003c\/strong\u003e this is a hardware part—confirm \u003cstrong\u003eM8 × 1.25 thread + 38mm length\u003c\/strong\u003e and match the application by \u003cstrong\u003ephoto\/old bolt\u003c\/strong\u003e (or your EPC\/VIN list) before dispatch to prevent wrong-size orders.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine OEM Royal Enfield part number \u003cstrong\u003e590544\/A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDescription: \u003cstrong\u003eHEX FLANGE BOLT M8 × 1.25 × 38\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThread: \u003cstrong\u003eM8\u003c\/strong\u003e with pitch \u003cstrong\u003e1.25\u003c\/strong\u003e; length \u003cstrong\u003e38mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlange head distributes load for stable clamping (reduces loosening vs wrong hardware)\u003c\/li\u003e\n\u003cli\u003eIdeal replacement for rounded\/rusted\/seized\/cross-threaded or missing bolts\u003c\/li\u003e\n\u003cli\u003eUsed in multiple assemblies across select RE models (exhaust\/guards\/brake sub-assemblies)\u003c\/li\u003e\n\u003cli\u003eReturn-prevention: order by spec + photo-match supported before shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility Table \u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePlatform\/Engine\u003c\/th\u003e\n\u003cth\u003eBS\/Emission\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eStatus (✅\/❓)\u003c\/th\u003e\n\u003cth\u003eNotes\/Constraints\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet 500 UCE\u003c\/td\u003e\n\u003ctd\u003eUCE 500\u003c\/td\u003e\n\u003ctd\u003eEuro 3 \/ BS3 (market dependent)\u003c\/td\u003e\n\u003ctd\u003eVaries (verify)\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 500 EFI\u003c\/td\u003e\n\u003ctd\u003eUCE 500 (EFI)\u003c\/td\u003e\n\u003ctd\u003eEuro 3 \/ BS3 (market dependent)\u003c\/td\u003e\n\u003ctd\u003eVaries (verify)\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 350 (UCE)\u003c\/td\u003e\n\u003ctd\u003eUCE 350\u003c\/td\u003e\n\u003ctd\u003eBS3\/BS4 (market dependent)\u003c\/td\u003e\n\u003ctd\u003eVaries (verify)\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHimalayan 411 (LS410 \/ “Himalayan 410 Euro 4”)\u003c\/td\u003e\n\u003ctd\u003eLS410\u003c\/td\u003e\n\u003ctd\u003eEuro 4 \/ BS4 (market dependent)\u003c\/td\u003e\n\u003ctd\u003eVaries (verify)\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet Trials 500 Euro 4 \/ Continental GT 535 Euro 3 \/ 650 Twins (Interceptor\/GT 650)\u003c\/td\u003e\n\u003ctd\u003eMultiple\u003c\/td\u003e\n\u003ctd\u003eEuro 4 \/ Euro 3\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e❓\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eVariants\u003c\/h2\u003e\n\u003cp\u003eNo variants.\u003c\/p\u003e\n\u003ch2\u003eFAQs \u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1 (Fitment): How do I confirm 590544\/A is the correct bolt for my bike?\u003c\/strong\u003e\u003cbr\u003eConfirm the fastener spec first: \u003cstrong\u003eM8 thread\u003c\/strong\u003e, \u003cstrong\u003e1.25 pitch\u003c\/strong\u003e, \u003cstrong\u003e38mm length\u003c\/strong\u003e, and a \u003cstrong\u003eflange head\u003c\/strong\u003e. Then match by (a) your \u003cstrong\u003eEPC\/VIN parts list\u003c\/strong\u003e showing 590544\/A, or (b) photo-match your old bolt and its location before dispatch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2 (Fitment): My seller says “fits many models” — is that safe?\u003c\/strong\u003e\u003cbr\u003eHardware bolts can appear on many assemblies but still differ by length\/pitch. Treat “fits all” claims as risky—order only when the spec and application match your old bolt or EPC list.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3 (Comparison): OEM bolt vs local bolt — what’s the difference?\u003c\/strong\u003e\u003cbr\u003eOEM bolts match the factory thread pitch, length, and flange geometry. Wrong bolts can bottom out, strip threads, loosen, or cause misalignment in brackets\/guards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4 (Installation): Any precautions while installing?\u003c\/strong\u003e\u003cbr\u003eStart threads by hand to avoid cross-threading. Use the correct torque for the assembly, and replace any damaged washers\/clips as required. For exhaust joints, re-check tightness after a short heat cycle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5 (Symptoms): When should I replace this bolt?\u003c\/strong\u003e\u003cbr\u003eRounded head, rust\/seized threads, cross-threading, missing bolt after service, or repeated loosening at a bracket\/guard location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6 (Returns-prevention): What should I send you to verify before shipping?\u003c\/strong\u003e\u003cbr\u003eSend (1) photo of the old bolt next to a scale\/ruler, (2) photo of where it’s used, and (3) your bike model + year. This prevents wrong-length\/pitch bolt orders.\u003c\/p\u003e","brand":"Royal Enfield (Genuine OEM)","offers":[{"title":"Default Title","offer_id":51090943017255,"sku":"590544\/A","price":64.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/E37CA45E-5145-4BDB-B698-900FA8DA9F5F.jpg?v=1772440111","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-hex-flange-bolt-m8x125x38-590544a","provider":"UNDER THE HOOD","version":"1.0","type":"link"}