{"product_id":"master-lock-pro-series-hidden-shackle-padlocks-keyed-alike-6271nka-3","title":"Master Lock Pro Series Hidden Shackle Padlocks Keyed Alike 6271NKA-3","description":"\u003cp\u003eIn this review of the Master Lock Pro Series Hidden Shackle Padlocks keyed alike set, the bottom line is straightforward: this three-pack is for anyone who needs heavy-duty, commercial-grade security with the convenience of multiple locks opening with the same key. The set ships with six keys and a hardened diecast zinc body that resists corrosion, and the standout feature is the BumpStop Advanced Cylinder Technology which specifically defends against lock bumping attempts. For enclosed trailers, gates, vending machines, and industrial applications where a tough, compact padlock matters, this set delivers consistent protection and value.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyed Alike Convenience:\u003c\/strong\u003e Three locks operate with the same key, simplifying access when multiple doors or points need the same key control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBumpStop Technology:\u003c\/strong\u003e The advanced cylinder uses a reverse rake driver pin and tight chambers to resist bumping and prevent unauthorized cylinder rotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened Body:\u003c\/strong\u003e The reinforced zinc diecast body provides corrosion resistance and durable impact protection for long-term outdoor use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Cutter Tough Shackle:\u003c\/strong\u003e The fully shielded hardened boron alloy shackle is designed to resist cutting and prying attempts common in commercial settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceable Cylinder:\u003c\/strong\u003e The removable high security 6-pin cylinder allows replacement or repinning for key control changes or maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis set is ideal for tradespeople, fleet managers, and anyone securing enclosed trailers, gates, vending machines, or industrial enclosures who wants a heavy-duty lock that is keyed alike for convenience. The robust build and anti-bump design suit outdoor use and high-risk access points where durability and attack resistance matter.\u003c\/p\u003e\n\u003cp\u003eThose who need an ultra-lightweight or decorative padlock, or who require electronic or keyed different solutions, should look elsewhere. Also, buyers who require very long shackles or nonstandard dimensions should confirm fit before purchase, since this set is a compact, shielded design.\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\u003eSolid build quality and corrosion-resistant zinc body make these locks durable in outdoor and industrial settings.\u003c\/li\u003e\n\u003cli\u003eBumpStop Advanced Cylinder Technology provides meaningful resistance to lock bumping attempts.\u003c\/li\u003e\n\u003cli\u003eKeyed alike set with six keys reduces the need to carry multiple key variations for common access points.\u003c\/li\u003e\n\u003cli\u003eHardened boron alloy shackle and shielding make cutting and prying far more difficult.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome customers reported fit issues or keys sticking occasionally, so a small minority may experience key or fitment problems.\u003c\/li\u003e\n\u003cli\u003eThe compact, shielded shackle may not suit applications that require a longer shackle reach.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet\u003c\/td\u003e\n\u003ctd\u003e3 keyed alike padlocks with 6 keys\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eHardened diecast zinc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShackle\u003c\/td\u003e\n\u003ctd\u003eFully shielded hardened boron alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCylinder\u003c\/td\u003e\n\u003ctd\u003eRemovable high security 6-pin cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnology\u003c\/td\u003e\n\u003ctd\u003eBumpStop Advanced Cylinder Technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (A x B x C x Width)\u003c\/td\u003e\n\u003ctd\u003e3\/8 in x 19\/32 in x 1-23\/32 in, Width 2-7\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Master Lock Pro Series hidden shackle keyed alike set is a practical, heavy-duty choice for commercial and industrial needs where keyed alike convenience and resistance to bumping and cutting are priorities. It offers excellent build quality and value for securing trailers, gates, and vending machines, though buyers should confirm the shackle dimensions for specific fit requirements.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these locks really keyed alike?\u003c\/strong\u003e\u003cbr\u003eYes, the set is sold keyed alike so all three locks operate with the same set of keys included, though a small number of users reported inconsistencies on individual units.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes BumpStop prevent all bumping attacks?\u003c\/strong\u003e\u003cbr\u003eBumpStop Advanced Cylinder Technology greatly reduces the transfer of force from a bump key and blocks cylinder rotation, making bumping far less effective than on standard cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the cylinder be changed or rekeyed?\u003c\/strong\u003e\u003cbr\u003eYes, the lock features a removable 6-pin cylinder that can be replaced or repinned for key control changes or maintenance.\u003c\/p\u003e","brand":"Master Lock","offers":[{"title":"Default Title","offer_id":48260458840283,"sku":"B0023TV0LO","price":98.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81oDw3UGKmL._AC_SL1500.jpg?v=1778316493","url":"https:\/\/gearmusthave.com\/products\/master-lock-pro-series-hidden-shackle-padlocks-keyed-alike-6271nka-3","provider":"GearMustHave","version":"1.0","type":"link"}