{"product_id":"master-lock-heavy-duty-solid-steel-lock-for-trucks-and-trailers-pack","title":"Master Lock Heavy Duty Solid Steel Lock for Trucks and Trailers - Pack","description":"\u003cp\u003eIn this review the Master Lock Heavy Duty Solid Steel Lock is assessed for users who need a tough keyed padlock and hasp solution for moving trucks, vans, or sliding doors. The single biggest reason to consider it is the combination of a \u003cstrong\u003ehidden shackle design\u003c\/strong\u003e and a solid steel, zinc-plated body that prioritizes resistance to bolt cutters and corrosion while remaining practical for indoor and outdoor use. The pack configuration and straightforward installation make it a sensible choice for fleet operators and homeowners securing larger sliding access points.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHidden shackle design:\u003c\/strong\u003e Keeps the shackle out of reach to reduce susceptibility to bolt cutter attacks and tampering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZinc plated solid steel body:\u003c\/strong\u003e Provides strength and corrosion resistance for reliable performance in outdoor and indoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive-pin cylinder:\u003c\/strong\u003e Offers increased pick resistance so the lock maintains security against common tampering methods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey retaining safeguard:\u003c\/strong\u003e Ensures the padlock is not left unlocked by holding the key in the cylinder until the lock is closed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded hasp sized for sliding doors:\u003c\/strong\u003e A 9-1\/16 in hasp length designed to accommodate moving truck and van door configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe lock is best for people who need a robust, visible deterrent for rear van doors, moving trucks, utility trailers, or buildings with sliding doors; it suits fleet managers, tradespeople, and homeowners who want a straightforward keyed padlock and hasp. Reviewers particularly note durability and security-minded features that make it appropriate where a concealed shackle and heavy steel body are priorities.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include anyone who cannot measure their door backset, cross bore, or thickness before purchasing, since the hasp fit and bolt selection matter for installation. If a battery-powered or smart locking solution is required, this mechanical keyed design will not meet that need.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSturdy zinc-plated steel construction offers solid physical protection and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eHidden shackle and five-pin cylinder increase resistance to bolt cutters and picking attempts.\u003c\/li\u003e\n\u003cli\u003eEasy to install with commonly available carriage bolts and straightforward hardware layout.\u003c\/li\u003e\n\u003cli\u003ePer-pack configuration provides a padlock and hasp with two keys, supporting multiple doors or spare keys.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires measuring door backset, cross bore and thickness to ensure correct fit; mismatched doors may need alternative hardware.\u003c\/li\u003e\n\u003cli\u003eCarriage bolts are not included, so extra purchase and the correct 3\/8 in bolts are needed for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMaster Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePadlock body diameter\u003c\/td\u003e\n\u003ctd\u003e2-7\/8 in (73 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHasp length\u003c\/td\u003e\n\u003ctd\u003e9-1\/16 in (23 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended installation bolts\u003c\/td\u003e\n\u003ctd\u003e3\/8 in carriage bolts (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeying\u003c\/td\u003e\n\u003ctd\u003eIncludes two keys and key retaining feature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCylinder\u003c\/td\u003e\n\u003ctd\u003eFive-pin cylinder for pick resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eZinc plated solid steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Master Lock heavy duty padlock and hasp is a practical, value-oriented choice for anyone securing trucks, trailers, vans, or sliding doors where physical strength and tamper resistance matter. It delivers solid build quality, a hidden shackle and a five-pin cylinder for enhanced security; just confirm door measurements and plan to purchase 3\/8 in carriage bolts for installation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this lock be used outdoors?\u003c\/strong\u003e\u003cbr\u003eYes, the zinc plated solid steel body and corrosion-resistant finish make it suitable for outdoor and indoor use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre carriage bolts included?\u003c\/strong\u003e\u003cbr\u003eNo, carriage bolts are not included; 3\/8 in carriage bolts are recommended for installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the hasp fit my sliding truck door?\u003c\/strong\u003e\u003cbr\u003ePossibly, but you should measure your door's backset, cross bore and thickness to ensure the 9-1\/16 in hasp and lock setup will fit correctly.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48184800346331,"sku":"B0F63G13WQ","price":138.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81UWzcKS7BL._AC_SL1500.jpg?v=1769520109","url":"https:\/\/gearmusthave.com\/products\/master-lock-heavy-duty-solid-steel-lock-for-trucks-and-trailers-pack","provider":"GearMustHave","version":"1.0","type":"link"}