{"product_id":"loctite-threadlocker-277-red-high-strength-liquid-50-ml-permanent-for-up-to-1-bolts","title":"Loctite Threadlocker 277 Red High-Strength Liquid 50 mL — Permanent for up to 1½\" Bolts","description":"\u003cp\u003e\u003cstrong\u003eLoctite 277 is a red, high-strength liquid threadlocker formulated to permanently secure large bolts and studs up to 1½\" (38 mm) while resisting vibration, corrosion, and loosening.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for industrial and heavy-duty applications, this 50 mL bottle of Loctite 277 delivers a permanent, pressure-activated adhesive that fills gaps between threads and cures to a tough polymer. It bonds quickly at room temperature, protects fasteners from rust and environmental damage, and remains serviceable with heat and mechanical removal methods. Manufactured in the United States, this product is intended for use on metal fasteners where a long-term, heavy-duty locking solution is required.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Loctite 277 secure large bolts and studs?\u003c\/h3\u003e\n\u003cp\u003eLoctite 277 is a liquid anaerobic adhesive that hardens when confined between metal threads in the absence of air. It locks mating parts by polymerizing into a durable network that resists shear and vibrational loosening, giving a strong mechanical bond across the threaded joint.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-strength formulation for permanent locking on heavy fasteners\u003c\/li\u003e\n  \u003cli\u003eEffective on bolt diameters up to 1½\" (38 mm)\u003c\/li\u003e\n  \u003cli\u003eWorks with standard ferrous and non-ferrous metal threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the protection and durability benefits?\u003c\/h3\u003e\n\u003cp\u003eBeyond securing fasteners, the cured adhesive forms a seal that inhibits moisture and contaminants from reaching the thread interface. This barrier reduces the risk of corrosion and fretting, extending the service life of assemblies exposed to harsh environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeals threads against rust and environmental ingress\u003c\/li\u003e\n  \u003cli\u003eMaintains clamp load under vibration and thermal cycling\u003c\/li\u003e\n  \u003cli\u003eLong-term performance suitable for heavy equipment and structural connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan Loctite 277 be removed or serviced later?\u003c\/h3\u003e\n\u003cp\u003eThough formulated for high-strength, permanent locking, Loctite 277 can be disassembled using heat and appropriate tools. Heat application softens the cured polymer, allowing removal with wrenches, extractors, or by drilling when necessary for repair or replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemovable with localized heat (typically applied with a torch or heat gun)\u003c\/li\u003e\n  \u003cli\u003eMechanical methods such as impact tools or drilling assist extraction\u003c\/li\u003e\n  \u003cli\u003ePlan for service access if future disassembly is anticipated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical tips improve application success?\u003c\/h3\u003e\n\u003cp\u003eProper surface prep and correct application amount ensure reliable curing and maximum bond strength. Clean threads of oil, grease, and debris, apply a moderate bead, and assemble to recommended torque to achieve optimal performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean fastener threads with a solvent or degreaser before applying\u003c\/li\u003e\n  \u003cli\u003eApply sufficient threadlocker to coat mating threads—avoid excess pooling\u003c\/li\u003e\n  \u003cli\u003eAllow cure time under typical ambient conditions for full strength\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Loctite 277 is intended for technicians, maintenance crews, fabricators, and engineers who need a dependable, high-strength threadlocking solution for large-diameter bolts and studs in automotive, industrial machinery, construction, or heavy equipment. Choose this product when you require a permanent lock with corrosion protection and the option to remove fasteners with controlled heat and tools.\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: What bolt size is Loctite 277 designed for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Loctite 277 is formulated to secure bolts and studs up to 1½\" (38 mm) diameter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do you remove Loctite 277 from threaded fasteners?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Remove by applying localized heat to soften the adhesive, then use hand tools or drilling to extract the fastener.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":48084385202334,"sku":"B004FCMJX0","price":30.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/loctite-277-front-bottle.jpg?v=1785852873","url":"https:\/\/northtrailauto.ca\/products\/loctite-threadlocker-277-red-high-strength-liquid-50-ml-permanent-for-up-to-1-bolts","provider":"North Trail Auto","version":"1.0","type":"link"}