{"product_id":"towworks-trailer-hitch-lock-pin-5-8-extra-long-3-1-4-span-keyed-tubular-hardened-steel-for-2-2-5-receivers","title":"TowWorks trailer hitch lock pin 5\/8\" extra-long 3-1\/4\" span — keyed tubular, hardened steel for 2\" \u0026 2.5\" receivers","description":"\u003cp\u003e\u003cstrong\u003eThe TowWorks 79631 is an extra-long, 5\/8\" diameter keyed hitch lock pin designed to secure Class III and IV trailers with 2\" and 2.5\" receiver tubes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis rugged tow-hitch locking pin combines a hardened-steel shaft with a corrosion-resistant finish, rubber vibration dampers and a push-lock tubular key for convenient, secure towing. Its 3-1\/4\" active span gives extra reach for deeper or offset receivers, while the included spring clip lets you use the pin even without the locking cylinder installed. Read on to understand fit, operation, and whether this lock is right for your trailer setup.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this hitch lock will fit my receiver?\u003c\/h3\u003e\n\u003cp\u003eMeasure the internal length of your hitch tube and compare it to the lock's maximum active span of 3-1\/4\". The 5\/8\" diameter pin is sized for standard Class III and IV receivers; compatibility depends on your trailer's specific tube thickness and any hitch-mounted accessories.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eActive length: 3-1\/4\" (extra long span for deeper receivers)\u003c\/li\u003e\n  \u003cli\u003ePin diameter: 5\/8\" (solid, hardened steel)\u003c\/li\u003e\n  \u003cli\u003eDesigned for 2\" and 2.5\" (2\" and 2-1\/2\") receiver tubes\u003c\/li\u003e\n  \u003cli\u003eAlways verify your hitch dimensions before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and weather protection does the TowWorks 79631 offer?\u003c\/h3\u003e\n\u003cp\u003eThe main shaft is solid hardened steel finished with a zinc plating and black e-coat to resist rust and abrasion. The push-lock mechanism includes a watertight rubber dust cap to reduce moisture entry and slow internal corrosion, helping the lock maintain smooth operation in outdoor conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardened steel pin for strength and cut resistance\u003c\/li\u003e\n  \u003cli\u003eZinc-plated base with black e-coating for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eRubber dust cap seals the lock core from the elements\u003c\/li\u003e\n  \u003cli\u003eRubber O-rings reduce rattle and protect the receiver finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the lock operated and what security features are included?\u003c\/h3\u003e\n\u003cp\u003eThe TowWorks 79631 uses a push-lock tubular key system that locks with a 1\/4-turn action; two tubular keys are included for convenience. For added redundancy you can still use the separate spring clip (cotter-style pin) if you prefer a non-keyed backup or need to secure the hitch quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePush-lock tubular cylinder with 1\/4-turn operation\u003c\/li\u003e\n  \u003cli\u003eTwo tubular keys included for easier access\u003c\/li\u003e\n  \u003cli\u003eSeparate spring clip (cotter pin) included as an alternative safety measure\u003c\/li\u003e\n  \u003cli\u003eRubber O-rings hold the pin steady and cut down on noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre the keys interchangeable or keyed alike with other TowWorks locks?\u003c\/h3\u003e\n\u003cp\u003eEach 79631 lock is shipped keyed unique, so its keys will not open other locks by default. TowWorks does offer keyed-alike options under different part numbers if you need multiple locks that operate with a single key.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e79631 ships keyed unique (each lock has its own key code)\u003c\/li\u003e\n  \u003cli\u003eChoose 79632 for two locks keyed alike, 79633 for three keyed alike\u003c\/li\u003e\n  \u003cli\u003eFor four or more keyed-alike locks, order part 79630 and specify quantity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? The TowWorks 79631 is intended for truck and trailer owners who need an extra-long, heavy-duty locking pin for Class III and IV receivers—especially when standard-length pins don't reach the hitch's pin hole or when a deeper, offset mount is used. It's a practical choice for boat trailers, campers, work trailers and anyone wanting a durable, weatherproof locking solution with the option to revert to a cotter pin for quick setups.\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: Will this lock fit a 2.5\" receiver?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 5\/8\" diameter pin and 3-1\/4\" active span are designed to fit both 2\" and 2.5\" receivers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use the lock without the keyed cylinder?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. A spring clip (cotter pin) is included so you can secure the pin without using the keyed lock mechanism.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TowWorks","offers":[{"title":"Default Title","offer_id":67591083983033,"sku":"B07LF6FDH1","price":69.21,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/towworks-hitch-lock-front-view.jpg?v=1790540931","url":"https:\/\/redleafauto.ca\/products\/towworks-trailer-hitch-lock-pin-5-8-extra-long-3-1-4-span-keyed-tubular-hardened-steel-for-2-2-5-receivers","provider":"Redleaf Auto","version":"1.0","type":"link"}