{"product_id":"royal-enfield-587605-b-socket-head-bolt","title":"Socket Head Bolt \/ Allen Bolt for Royal Enfield (Order by Part No.) – 587605\/B (Critical: verify size before buying)","description":"\u003cp data-start=\"211\" data-end=\"706\"\u003eThe \u003cstrong data-start=\"257\" data-end=\"269\"\u003e587605\/B\u003c\/strong\u003e is a genuine \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eRoyal Enfield\u003c\/span\u003e\u003c\/span\u003e fastener used across multiple assemblies in different models\/years (examples seen in wheel\/brake-related parts lists and dealer catalogues). The challenge: \u003cstrong data-start=\"477\" data-end=\"527\"\u003epublic sources conflict on the exact size\/spec\u003c\/strong\u003e for this same part number—some list it as \u003cstrong data-start=\"570\" data-end=\"601\"\u003eSocket Head Bolt M8×1.25×20\u003c\/strong\u003e, while others list it as \u003cstrong data-start=\"627\" data-end=\"667\"\u003eHex\/Socket Button Head Screw M6×1×14\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"708\" data-end=\"1104\"\u003eSo this listing is optimized for \u003cstrong data-start=\"741\" data-end=\"794\"\u003eaccurate ordering by part number + physical match\u003c\/strong\u003e. If your bike already has this bolt\/screw installed, replace it with the same part number and confirm the \u003cstrong data-start=\"901\" data-end=\"939\"\u003ethread diameter, pitch, and length\u003c\/strong\u003e before checkout. Also searched as \u003cstrong data-start=\"974\" data-end=\"988\"\u003eAllen bolt\u003c\/strong\u003e, \u003cstrong data-start=\"990\" data-end=\"1004\"\u003eimbus bolt\u003c\/strong\u003e, \u003cstrong data-start=\"1006\" data-end=\"1030\"\u003esocket head cap bolt\u003c\/strong\u003e, \u003cstrong data-start=\"1032\" data-end=\"1045\"\u003edisc bolt\u003c\/strong\u003e, \u003cstrong data-start=\"1047\" data-end=\"1065\"\u003erear disc bolt\u003c\/strong\u003e, and \u003cstrong data-start=\"1071\" data-end=\"1103\"\u003ehex socket button head screw\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1106\" data-end=\"1333\"\u003e\u003cstrong data-start=\"1106\" data-end=\"1125\"\u003eBefore you buy:\u003c\/strong\u003e match your old bolt by \u003cstrong data-start=\"1149\" data-end=\"1268\"\u003e(1) part number 587605\/B, (2) thread size (M6 vs M8), (3) pitch (if M8: 1.25), (4) length under head (14mm vs 20mm)\u003c\/strong\u003e, or share a clear photo + measurements with us for confirmation.\u003c\/p\u003e\n\u003cp data-start=\"1338\" data-end=\"1371\"\u003e\u003cstrong data-start=\"1338\" data-end=\"1369\"\u003eKey Features \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1372\" data-end=\"2101\"\u003e\n\u003cli data-start=\"1372\" data-end=\"1447\"\u003e\n\u003cp data-start=\"1374\" data-end=\"1447\"\u003eGenuine \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eRoyal Enfield\u003c\/span\u003e\u003c\/span\u003e part number: \u003cstrong data-start=\"1433\" data-end=\"1445\"\u003e587605\/B\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1448\" data-end=\"1507\"\u003e\n\u003cp data-start=\"1450\" data-end=\"1507\"\u003eCommon naming: \u003cstrong data-start=\"1465\" data-end=\"1505\"\u003esocket head \/ Allen \/ imbus fastener\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1508\" data-end=\"1641\"\u003e\n\u003cp data-start=\"1510\" data-end=\"1641\"\u003e\u003cstrong data-start=\"1510\" data-end=\"1557\"\u003eCritical spec conflict in public catalogues\u003c\/strong\u003e (M8×1.25×20 vs M6×1×14) → buyer must verify \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1642\" data-end=\"1724\"\u003e\n\u003cp data-start=\"1644\" data-end=\"1724\"\u003eIdeal for replacements where the original is worn, rusted, rounded, or missing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1725\" data-end=\"1827\"\u003e\n\u003cp data-start=\"1727\" data-end=\"1827\"\u003eHelps prevent loosening when the correct grade + tightening method is used (application-dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1828\" data-end=\"1924\"\u003e\n\u003cp data-start=\"1830\" data-end=\"1924\"\u003eWorks best when installed with the correct \u003cstrong data-start=\"1873\" data-end=\"1894\"\u003eAllen key\/hex bit\u003c\/strong\u003e and proper torque procedure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1925\" data-end=\"2004\"\u003e\n\u003cp data-start=\"1927\" data-end=\"2004\"\u003eReduces risk of wrong-order returns via \u003cstrong data-start=\"1967\" data-end=\"1988\"\u003emeasurement-first\u003c\/strong\u003e checkout flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2005\" data-end=\"2101\"\u003e\n\u003cp data-start=\"2007\" data-end=\"2101\"\u003eSuitable for export orders where the customer needs \u003cstrong data-start=\"2059\" data-end=\"2086\"\u003eexact hardware matching\u003c\/strong\u003e by part number\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2106\" data-end=\"2142\"\u003e\u003cstrong data-start=\"2106\" data-end=\"2140\"\u003eCompatibility Table \u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2144\" data-end=\"2803\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"2144\" data-end=\"2228\"\u003e\n\u003ctr data-start=\"2144\" data-end=\"2228\"\u003e\n\u003cth data-start=\"2144\" data-end=\"2152\" data-col-size=\"md\" class=\"\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2152\" data-end=\"2170\" data-col-size=\"sm\" class=\"\"\u003ePlatform\/Engine\u003c\/th\u003e\n\u003cth data-start=\"2170\" data-end=\"2184\" data-col-size=\"sm\" class=\"\"\u003eBS\/Emission\u003c\/th\u003e\n\u003cth data-start=\"2184\" data-end=\"2192\" data-col-size=\"sm\" class=\"\"\u003eYears\u003c\/th\u003e\n\u003cth data-start=\"2192\" data-end=\"2207\" data-col-size=\"sm\" class=\"\"\u003eStatus (✅\/❓)\u003c\/th\u003e\n\u003cth data-start=\"2207\" data-end=\"2228\" data-col-size=\"xl\" class=\"\"\u003eNotes\/Constraints\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2255\" data-end=\"2803\"\u003e\n\u003ctr data-start=\"2255\" data-end=\"2519\"\u003e\n\u003ctd data-start=\"2255\" data-end=\"2300\" data-col-size=\"md\"\u003eRoyal Enfield (multiple models\/assemblies)\u003c\/td\u003e\n\u003ctd data-start=\"2300\" data-end=\"2311\" data-col-size=\"sm\"\u003eMultiple\u003c\/td\u003e\n\u003ctd data-start=\"2311\" data-end=\"2322\" data-col-size=\"sm\"\u003eMultiple\u003c\/td\u003e\n\u003ctd data-start=\"2322\" data-end=\"2333\" data-col-size=\"sm\"\u003eMultiple\u003c\/td\u003e\n\u003ctd data-start=\"2333\" data-end=\"2337\" data-col-size=\"sm\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2337\" data-end=\"2519\" data-col-size=\"xl\"\u003e\n\u003cstrong data-start=\"2339\" data-end=\"2429\"\u003eDo NOT buy by model name. Buy only if your old fastener matches 587605\/B + dimensions.\u003c\/strong\u003e Public sources conflict on M6×1×14 vs M8×1.25×20. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2520\" data-end=\"2803\"\u003e\n\u003ctd data-start=\"2520\" data-end=\"2547\" data-col-size=\"md\"\u003eBullet 350 ES Disc (BS4)\u003c\/td\u003e\n\u003ctd data-start=\"2547\" data-end=\"2560\" data-col-size=\"sm\"\u003eBullet 350\u003c\/td\u003e\n\u003ctd data-start=\"2560\" data-end=\"2566\" data-col-size=\"sm\"\u003eBS4\u003c\/td\u003e\n\u003ctd data-start=\"2566\" data-end=\"2570\" data-col-size=\"sm\"\u003e—\u003c\/td\u003e\n\u003ctd data-start=\"2570\" data-end=\"2574\" data-col-size=\"sm\"\u003e❓\u003c\/td\u003e\n\u003ctd data-start=\"2574\" data-end=\"2803\" data-col-size=\"xl\"\u003eListed by \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eTheSparesCompany\u003c\/span\u003e\u003c\/span\u003e as fitting \u003cstrong data-start=\"2635\" data-end=\"2664\"\u003eBullet 350 ES Disc – BSIV\u003c\/strong\u003e, but official model-level confirmation is not publicly verifiable here; treat as \u003cstrong data-start=\"2746\" data-end=\"2762\"\u003everify-first\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-start=\"2805\" data-end=\"2851\"\u003e\u003cstrong data-start=\"2805\" data-end=\"2849\"\u003eExplicit exclusions (return-prevention):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2852\" data-end=\"3117\"\u003e\n\u003cli data-start=\"2852\" data-end=\"2997\"\u003e\n\u003cp data-start=\"2854\" data-end=\"2997\"\u003eNot a “universal bolt” you should buy by guesswork. If your bike uses a similar-looking bolt but different pitch\/length, \u003cstrong data-start=\"2975\" data-end=\"2994\"\u003eit will not fit\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2998\" data-end=\"3117\"\u003e\n\u003cp data-start=\"3000\" data-end=\"3117\"\u003eIf your existing bolt is \u003cstrong data-start=\"3025\" data-end=\"3031\"\u003eM6\u003c\/strong\u003e, do not order assuming \u003cstrong data-start=\"3055\" data-end=\"3061\"\u003eM8\u003c\/strong\u003e (and vice versa). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3122\" data-end=\"3149\"\u003e\u003cstrong data-start=\"3122\" data-end=\"3134\"\u003eVariants\u003c\/strong\u003e\u003cbr data-start=\"3134\" data-end=\"3137\"\u003eNo variants.\u003c\/p\u003e\n\u003cp data-start=\"3154\" data-end=\"3176\"\u003e\u003cstrong data-start=\"3154\" data-end=\"3174\"\u003eFAQs \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3178\" data-end=\"3554\"\u003e\u003cstrong data-start=\"3178\" data-end=\"3245\"\u003eQ1 (Fitment): How do I confirm 587605\/B is correct for my bike?\u003c\/strong\u003e\u003cbr data-start=\"3245\" data-end=\"3248\"\u003eA: Confirm in this order: (1) your old bolt packaging\/part number shows \u003cstrong data-start=\"3320\" data-end=\"3332\"\u003e587605\/B\u003c\/strong\u003e, (2) measure thread diameter (\u003cstrong data-start=\"3363\" data-end=\"3375\"\u003eM6 or M8\u003c\/strong\u003e) and length under head (\u003cstrong data-start=\"3400\" data-end=\"3416\"\u003e14mm or 20mm\u003c\/strong\u003e), (3) match head type (socket\/Allen). Public sources conflict on spec, so measurement is mandatory. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3556\" data-end=\"3894\"\u003e\u003cstrong data-start=\"3556\" data-end=\"3617\"\u003eQ2 (Fitment): Is this for rear disc \/ wheel applications?\u003c\/strong\u003e\u003cbr data-start=\"3617\" data-end=\"3620\"\u003eA: Many sellers label it for wheel\/brake-related use (including rear disc wording), but because the spec differs across catalogues, you should treat it as \u003cstrong data-start=\"3775\" data-end=\"3819\"\u003epart-number + dimension matched hardware\u003c\/strong\u003e, not “rear disc bolt for all bikes.” \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3896\" data-end=\"4276\"\u003e\u003cstrong data-start=\"3896\" data-end=\"3979\"\u003eQ3 (Comparison): Genuine OEM vs local hardware shop bolt—what’s the difference?\u003c\/strong\u003e\u003cbr data-start=\"3979\" data-end=\"3982\"\u003eA: OEM bolts match the original head profile and tolerances for that assembly. Local bolts may differ in pitch, grade, head height, or thread engagement—common cause of stripping\/loosening. If you’re replacing a critical fastener, OEM is the safer route, but only if you match the correct size.\u003c\/p\u003e\n\u003cp data-start=\"4278\" data-end=\"4565\"\u003e\u003cstrong data-start=\"4278\" data-end=\"4334\"\u003eQ4 (Installation): Any precautions while installing?\u003c\/strong\u003e\u003cbr data-start=\"4334\" data-end=\"4337\"\u003eA: Clean the threads, start by hand to avoid cross-threading, use the correct Allen bit, and tighten as per your service manual torque for that exact joint. If thread-lock was used previously, remove residue before reinstalling.\u003c\/p\u003e\n\u003cp data-start=\"4567\" data-end=\"4788\"\u003e\u003cstrong data-start=\"4567\" data-end=\"4624\"\u003eQ5 (Symptoms): What issues does replacing this solve?\u003c\/strong\u003e\u003cbr data-start=\"4624\" data-end=\"4627\"\u003eA: Rounded Allen head, rusted\/chewed threads, missing fastener, abnormal play\/noise from a mounted component, or recurring loosening due to damaged threads\/head.\u003c\/p\u003e\n\u003cp data-start=\"4790\" data-end=\"5095\"\u003e\u003cstrong data-start=\"4790\" data-end=\"4884\"\u003eQ6 (Returns-prevention): What photo\/measurements should I send to confirm before ordering?\u003c\/strong\u003e\u003cbr data-start=\"4884\" data-end=\"4887\"\u003eA: Send (1) top view of bolt head, (2) side view with a ruler showing \u003cstrong data-start=\"4957\" data-end=\"4978\"\u003elength under head\u003c\/strong\u003e, and (3) thread diameter reading (vernier preferred). If you can’t measure pitch, share a clear close-up of threads.\u003c\/p\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Default Title","offer_id":51008818708775,"sku":null,"price":135.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/D79F0B27-2358-4F9B-9BF3-164BE3624B2A.jpg?v=1770465217","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-587605-b-socket-head-bolt","provider":"UNDER THE HOOD","version":"1.0","type":"link"}