{"product_id":"adyoney-trailer-coupler-pins-10-pack-12mm-x-100mm-1-2-x-4-galvanized-locking-square-pins","title":"Adyoney Trailer Coupler Pins 10-Pack 12mm x 100mm (1\/2\" x 4\") — Galvanized Locking Square Pins","description":"\u003cp\u003e\u003cstrong\u003eAdyoney 10Pcs 12mm x 100mm (1\/2\" x 4\") square trailer coupler pins are galvanized carbon-steel locking pins designed to secure trailer couplers and quick-release hitch connections safely and reliably.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese 10 galvanized square wire-lock shaft pins from Adyoney are made from carbon steel and sized at 12mm x 100mm (1\/2\" x 4\"). They are built for routine towing, trailer assembly, and equipment attachment tasks where a simple, durable locking pin is needed. The set includes ten identical pins, each with a locking feature that prevents accidental disengagement while in service. The zinc-like galvanized finish resists corrosion and the straightforward design keeps installation and removal fast—useful for farm trailers, landscaping trailers, utility trailers, and many DIY towing needs.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these pins keep a trailer coupler secured?\u003c\/h3\u003e\n\u003cp\u003eThe pins lock through the coupler or hitch receiver, holding components together under load and preventing unintended separation. Each pin includes a wire-lock shaft that snaps into place, reducing rattle and movement while towing. Their square cross-section fits common square coupler holes and resists rotation better than round pins in some setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12mm x 100mm (1\/2\" x 4\") sizing matches many standard coupler and hitch holes.\u003c\/li\u003e\n  \u003cli\u003eWire-lock shaft provides a quick snap-in locking action.\u003c\/li\u003e\n  \u003cli\u003eSquare shaft profile helps minimize pin spin inside the coupler.\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish reduces corrosion from weather exposure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and finish are used, and why does that matter?\u003c\/h3\u003e\n\u003cp\u003eAdyoney pins are made of carbon steel for strength and toughness under repeated load cycles. The galvanized surface treatment gives a protective zinc coating that helps prevent rust and makes the pins suitable for outdoor use. While not stainless steel, the combination of carbon steel strength and galvanization gives a cost-effective balance of durability and corrosion resistance for general towing tasks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon steel core offers reliable shear strength for towing loads.\u003c\/li\u003e\n  \u003cli\u003eGalvanized surface resists moisture and surface rust.\u003c\/li\u003e\n  \u003cli\u003eRobust construction suitable for farm, garden, and utility trailers.\u003c\/li\u003e\n  \u003cli\u003eNot intended for chemical exposure environments without additional protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and removal during regular use?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: align the coupler or receiver holes, slide the pin through, and secure the wire-lock shaft. Removal is just as quick—release the locking clip and withdraw the pin. This simplicity saves time when hooking and unhooking trailers multiple times a day or season.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick slide-in installation for fast attachment and detachment.\u003c\/li\u003e\n  \u003cli\u003eWire-lock clip reduces chance of accidental disengagement while towing.\u003c\/li\u003e\n  \u003cli\u003eTen-pin pack keeps multiple trailers or spare pins on hand.\u003c\/li\u003e\n  \u003cli\u003eSimple maintenance: wipe clean and check locks periodically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these pins compatible with my trailer or hitch setup?\u003c\/h3\u003e\n\u003cp\u003eThese pins suit trailers and hitches with a 12mm (1\/2\") hole and a need for a 100mm (4\") length pin. They fit many small-to-medium utility trailers, lawn and garden trailers, and agricultural implements. Confirm your coupler or receiver hole size and required pin length before purchase to ensure correct fitment. Note: manual measurement may vary by 1–2mm.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasure your trailer\/hitch hole to confirm 12mm (1\/2\") fit.\u003c\/li\u003e\n  \u003cli\u003eCheck required pin length; this set provides 100mm (4\") length.\u003c\/li\u003e\n  \u003cli\u003eSuitable for common agricultural and utility trailer applications.\u003c\/li\u003e\n  \u003cli\u003eBuy extra pins to keep spares on hand or outfit multiple trailers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Adyoney 10Pcs 12mm x 100mm square trailer coupler pins are ideal for homeowners, landscapers, small-farm owners, and anyone who frequently connects and disconnects utility trailers. They work well for people who want a practical, economical pack of locking pins with corrosion-resistant galvanization for seasonal outdoor use. If you need heavy-industrial-grade pins for extreme loads or specialized environments, consider higher-spec hardware—but for everyday trailer securing and quick operations, this Adyoney set is a dependable choice.\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: What size hole do these pins fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit a 12mm (1\/2\") hole and measure 100mm (4\") long; verify your coupler hole before buying.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these pins rust-resistant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They have a galvanized coating for improved rust resistance, suitable for outdoor use but not chemical exposure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Adyoney","offers":[{"title":"Default Title","offer_id":55163402453335,"sku":"B0FGDGV1JN","price":49.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/adyoney-front-packaging-trailer-pins.jpg?v=1790344046","url":"https:\/\/britishgarage.co.uk\/products\/adyoney-trailer-coupler-pins-10-pack-12mm-x-100mm-1-2-x-4-galvanized-locking-square-pins","provider":"British Garage","version":"1.0","type":"link"}