{"product_id":"sea-dog-751010-1-square-trailer-coupler-locking-pin-1-4-in-electro-galvanized-steel","title":"Sea-Dog Coupler Pin 751010-1, 1\/4 Inch Square Trailer Coupler Locking Pin, Electro-Galvanized Steel","description":"\u003cp\u003eThe Sea-Dog 751010-1 is a square coupler locking pin built to secure your trailer coupler and prevent accidental uncoupling while in transit. Constructed of electro-galvanized steel, it resists corrosion from road spray, launch ramps, and general outdoor exposure, making it well suited to boat trailers and other towed equipment stored near water. The pin uses a snap lock bale that is spring tensioned, giving it stronger holding power than a simple friction-fit pin so it stays seated over rough roads and repeated hitching cycles.\u003c\/p\u003e\u003cp\u003eSized at 1\/4 inch, the 751010-1 is designed to fit most coupler sizes, making it a straightforward upgrade or replacement for a worn, bent, or missing coupler pin. It ships as a single pin and is a simple, tool-free installation: insert the pin through the coupler latch and snap the spring-loaded bale closed to lock it in place. Because it is sold individually, it is easy to keep a spare on hand or to replace just the one pin that has failed rather than an entire coupler lock assembly.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sea-Dog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 751010-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Electro-Galvanized Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Diameter (A):\u003c\/strong\u003e 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (B):\u003c\/strong\u003e 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimension C:\u003c\/strong\u003e 1-13\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimension D:\u003c\/strong\u003e 7\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimension E:\u003c\/strong\u003e 13\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.106 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 035514751025\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00035514751025\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Pack:\u003c\/strong\u003e 10 each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoupler Fitment:\u003c\/strong\u003e Fits most coupler sizes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits most trailer coupler sizes at the 1\/4 inch pin size; no specific make, model, or year fitment is specified.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are specified for this part.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sea-Dog 751010-1 coupler pin?\u003c\/strong\u003e The Sea-Dog 751010-1 is a 1\/4 inch square coupler locking pin, with an overall length of 3 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 751010-1 pin made of?\u003c\/strong\u003e It is made of electro-galvanized steel, which provides corrosion resistance for outdoor and marine trailer use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this pin fit my trailer coupler?\u003c\/strong\u003e The 751010-1 is designed to fit most coupler sizes at the 1\/4 inch pin diameter; check your coupler's latch opening against the 1\/4 inch pin size before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the locking mechanism work?\u003c\/strong\u003e A spring-tensioned snap lock bale holds the 751010-1 pin in place once inserted, giving it stronger holding power than a plain friction pin and helping prevent accidental uncoupling in transit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pins come in a package?\u003c\/strong\u003e The Sea-Dog 751010-1 is sold as a single coupler pin, one piece per unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 751010-1 weigh?\u003c\/strong\u003e The pin weighs 0.106 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation tool-free?\u003c\/strong\u003e Yes, installation is tool-free: insert the pin through the coupler latch and snap the spring-loaded bale closed to lock it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a larger size available?\u003c\/strong\u003e Sea-Dog offers a related coupler pin, part number 751011-1, at 5\/16 inch, which is a separate SKU from the 1\/4 inch 751010-1 pin.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this part?\u003c\/strong\u003e The UPC for the Sea-Dog 751010-1 coupler pin is 035514751025.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this pin resist rust?\u003c\/strong\u003e Yes, the electro-galvanized steel construction of the 751010-1 is built to resist corrosion in wet and outdoor trailering conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does dimension C, D, and E refer to on this pin?\u003c\/strong\u003e For the 751010-1, dimension C measures 1-13\/16 inches, dimension D measures 7\/16 inch, and dimension E measures 13\/16 inch, describing the pin's additional body and bale dimensions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this pin as a replacement for a lost or broken coupler pin?\u003c\/strong\u003e Yes, the 751010-1 is intended as a direct replacement coupler pin for coupler locks that use a 1\/4 inch square pin.\u003c\/p\u003e","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":48988828565723,"sku":"S-D-751010-1","price":3.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/5418.jpg?v=1784429976","url":"https:\/\/www.goodvibesmarina.com\/products\/sea-dog-751010-1-square-trailer-coupler-locking-pin-1-4-in-electro-galvanized-steel","provider":"Good Vibes Marina","version":"1.0","type":"link"}