{"product_id":"0-63-bolt-kit-5-bolt-install-for-coupler","title":"0.63 Bolt Kit 5 – Bolt Install for Coupler","description":"\u003cp\u003eSecure and streamline your trailer coupler installation with the \u003cstrong\u003e0.63 Bolt Kit 5\u003c\/strong\u003e—a 5\/8″ Grade 8 bolt kit engineered for adjustable channel or coupler mounts. Ideal for OEM-style assembly, aftermarket upgrades, and on-the-road repairs requiring trusted, heavy-duty fasteners.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e4 – 1A10028 Bolts \u003c\/strong\u003e(0.63″, Grade 5, 150 lb-ft torque)\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003e4 – 6F10 Nuts\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eComplete Grade 8 Hardware\u003c\/strong\u003e: Each kit includes 5 bolts, nuts, and washers—ready for immediate installation\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eHeavy-Duty 5\/8″ Bolts\u003c\/strong\u003e: Grade 8, fine-thread bolts resist loosening and shear failure under load\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eLocking Nuts Included\u003c\/strong\u003e: Nylon-insert lock nuts prevent strip and seal in high-vibration environments\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIdeal for Adjustable Channels\u003c\/strong\u003e: Designed to fit standard 5\/8″ coupler and tow-ring mounting holes\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e: Zinc or electro-galvanized coating protects against rust\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e   \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eComponent\u003c\/th\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eBolt Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5\/8″ (0.63″)–18 NF, Grade 8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBolts: 4 Nuts: 4\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eBolt Length\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4½ in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eNuts\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5\/8″ nylon-insert lock nuts\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWashers\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5\/8″ hardened flat washers\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eZinc or electro-galvanized\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eHigh-strength alloy steel (Grade 8)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTorque Rating\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eOEM-level clamp force\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eUse Case\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eMounting trailer couplers and tow rings using adjustable channel\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e   \u003cp\u003e\u003cstrong\u003eWhy Choose This Kit\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eOEM-Quality Safety\u003c\/strong\u003e: Grade 8 hardware meets or exceeds manufacturer specs—engineered to maintain tight torque even under vibration\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eOne-and-Done Convenience\u003c\/strong\u003e: Includes everything needed for installation—eliminates downtime searching for parts\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eBuilt for Rough Conditions\u003c\/strong\u003e: Zinc coatings and hardened steel prevent corrosion and provide long-term reliability\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eAdjustable channel couplers from Dexter, Demco, Buyers, Curt, et al.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e5\/8″ mounting hole trailer couplers, lunette rings, and tow-ring plates\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis kit fits on coupler part numbers \u003c\/p\u003e","brand":"Trailer Parts Mart","offers":[{"title":"Default Title","offer_id":52963034071256,"sku":"0.63BoltKit5","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/0898\/9144\/files\/01_1000000649_8390a5e36b14.webp?v=1794459157","url":"https:\/\/trailerproparts.com\/products\/0-63-bolt-kit-5-bolt-install-for-coupler","provider":"Trailer Parts Mart","version":"1.0","type":"link"}