{"product_id":"towworks-79631-trailer-hitch-lock-extra-long-5-8-pin-3-1-4-span-tubular-keyed-unique-zinc-e-coat","title":"TowWorks 79631 Trailer Hitch Lock — Extra-Long 5\/8\" Pin, 3-1\/4\" Span, Tubular Keyed Unique, Zinc\/E-Coat","description":"\u003cp\u003e\u003cstrong\u003eTowWorks 79631 is a heavy-duty, extra-long 5\/8\" diameter trailer hitch locking pin designed to secure Class III and IV hitches with 2\" and 2.5\" receivers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis lock combines a hardened steel, zinc-plated pin with a black e-coat finish, a push-and-turn tubular key mechanism, and accessory parts aimed at reducing rattle and adding redundancy. It’s sold keyed unique (each unit has its own key set), offers a 3-1\/4\" active span to bridge larger receiver depths, and includes a removable spring clip for an added mechanical backup. The design balances theft resistance with user-friendly operation for towing, storage, and long-term outdoor exposure.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the extra-long 3-1\/4\" span benefit my hitch setup?\u003c\/h3\u003e\n\u003cp\u003eThe extended active length lets the pin pass through deeper hitch tubes or accommodate accessories like shank extenders, balls, and plates that require extra reach. This makes it suitable for many Class III and IV setups that standard pins can’t fully traverse.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum active length: 3-1\/4\" for deeper receivers and multi-part assemblies.\u003c\/li\u003e\n  \u003cli\u003e5\/8\" diameter for thicker, stronger shear resistance than smaller pins.\u003c\/li\u003e\n  \u003cli\u003eFits both 2\" and 2.5\" receiver openings without special adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat security features prevent theft and corrosion?\u003c\/h3\u003e\n\u003cp\u003eThe TowWorks 79631 uses a solid hardened steel core with zinc plating and black e-coat to resist wear and rust. The tubular push-lock requires a specific tubular key for operation, and a watertight rubber dust cap shields the locking mechanism from moisture and grit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTubular push-lock system with two unique keys supplied for secure access.\u003c\/li\u003e\n  \u003cli\u003eWatertight rubber cap over the lock to reduce internal corrosion risk.\u003c\/li\u003e\n  \u003cli\u003eHardened steel construction plus zinc\/e-coat finishes for durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the lock manage rattles and provide backup safety?\u003c\/h3\u003e\n\u003cp\u003eRubber O-rings are positioned on the shaft to dampen noise and keep the pin snug in slightly varying tube tolerances. Additionally, a separate spring clip (cotter pin) is provided so you can use a mechanical backup in situations where you prefer or require redundancy.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRubber O-rings reduce vibration and audible rattling during travel.\u003c\/li\u003e\n  \u003cli\u003eAdjustable O-ring count or removal allows fit customization for different receiver tightness.\u003c\/li\u003e\n  \u003cli\u003eIncluded spring clip (cotter pin) must be used as an extra safety measure when required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I get multiple locks keyed alike or do I need separate keys?\u003c\/h3\u003e\n\u003cp\u003eThis model (79631) is shipped keyed unique — each lock comes with its own pair of tubular keys for independent security. TowWorks offers other SKUs if you need multiple locks keyed alike.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e79631: keyed unique (each lock has different keys).\u003c\/li\u003e\n  \u003cli\u003eChoose 79632 for two locks keyed alike, 79633 for three keyed alike, or 79630 for larger same-key quantities.\u003c\/li\u003e\n  \u003cli\u003eTwo tubular keys included per lock for convenience and spare access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? TowWorks 79631 is aimed at vehicle owners, contractors, landscapers, RVers, and anyone who tows heavy loads or uses deep receiver setups and needs a robust, easy-to-operate locking pin. It’s a good match when you want a durable, corrosion-resistant pin with anti-rattle features and the option to use a mechanical cotter pin backup. If you require multiple locks that operate on the same key, choose the corresponding keyed-alike TowWorks SKU for a unified key solution.\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 fit both 2\" and 2.5\" receivers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 5\/8\" pin and 3-1\/4\" span are designed to work with most Class III and IV 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 spring (cotter) clip?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the lock functions with or without the cotter clip, but the clip is recommended for additional mechanical safety.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TowWorks","offers":[{"title":"Default Title","offer_id":55166706090327,"sku":"B07LF6FDH1","price":38.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/towworks-79631-front-view.jpg?v=1790370509","url":"https:\/\/britishgarage.co.uk\/products\/towworks-79631-trailer-hitch-lock-extra-long-5-8-pin-3-1-4-span-tubular-keyed-unique-zinc-e-coat","provider":"British Garage","version":"1.0","type":"link"}