{"product_id":"adjustable-gate-hinge-m20-jointed-plates-back-plate","title":"Adjustable Gate Hinge M20 with Jointed Plates on Back Plate 115 x 40mm, Bolt-On, 500kg","description":"\u003cp\u003e\u003cstrong\u003eThe heaviest of the short-thread back plate hinges: an M20 adjustable gate hinge for gates up to 500kg on two hinges.\u003c\/strong\u003e A thick zinc-plated M20 eye bolt fixes through the post section with a hex nut and a 50mm round washer plate, and its eye is pinned in a jointed-plate bracket already welded to a 5mm oval back plate. The bracket reaches 48mm from the back of the plate, giving the larger M20 eye room to turn. Bolt, coach screw or weld the plate to the gate, then wind the bolt along its 40mm thread to set the gap. In the box: the eye bolt, the bracket on its back plate, the pin and screw, the nut and the washer plate. The price shown is for one hinge, minimum order 5.\u003c\/p\u003e\n\u003cfigure style=\"margin:16px 0\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0621\/3002\/8778\/files\/adjustable-gate-hinge-m20-jointed-back-plate-drawing.jpg?width=1200\" alt=\"Dimension drawing of the M20 adjustable gate hinge: back plate 115 x 40 x 5mm, two 11mm holes at 73mm centres, 48mm plate back to bracket end, 75mm overall bolt length, 40mm thread, 50mm washer plate 4mm thick\" width=\"1200\" height=\"1200\" loading=\"lazy\" style=\"display:block;width:100%;max-width:760px;height:auto;margin:0 auto\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eWhat you get\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eEye bolt\u003c\/th\u003e\n\u003ctd\u003eM20, 75mm overall, 40mm of thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBracket on back plate\u003c\/th\u003e\n\u003ctd\u003eTwo flat jointed plates welded to an oval 115 x 40 x 5mm back plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePin and screw\u003c\/th\u003e\n\u003ctd\u003eFlanged hollow pin held by a small socket screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHex nut and washer plate\u003c\/th\u003e\n\u003ctd\u003eNut with a 50mm round plate, 4mm thick, made of two interlocking halves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eWhy choose this hinge\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for the heavy leaf.\u003c\/strong\u003e The M20 bolt is rated for gates up to 500kg on two hinges, so it takes solid-infill gates, wide single leaves and yard gates that would overload an M16 or M18.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBolt it on or weld it on.\u003c\/strong\u003e The back plate has two 11mm holes at 73mm centres for M10 bolts or coach screws. On a steel gate you can weld the plate instead and leave the bolts out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReset the gate without cutting.\u003c\/strong\u003e Heavy gates settle. Slacken the nut, wind the bolt in or out on its 40mm thread until the leaf hangs true, and tighten it again.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpread the weight on the stile.\u003c\/strong\u003e A 5mm plate 115mm tall carries the pull down the stile rather than concentrating it at one small weld, which matters most on thin-wall box section.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComes off for maintenance.\u003c\/strong\u003e Bolted plates mean the leaf can be taken down for repainting or repair and hung back up on the same holes.\u003c\/p\u003e\n\u003ch2\u003eWhere it is used\u003c\/h2\u003e\n\u003cp\u003eHeavy steel driveway and yard gates, solid-infill and clad gates, compound and plant area gates on flat bar or thin-wall steel sections, and upgrading an undersized hinge on an existing gate where the leaf has dropped.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSold as\u003c\/th\u003e\n\u003ctd\u003eOne hinge, minimum order 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBolt\u003c\/th\u003e\n\u003ctd\u003eM20, 40mm of thread, 75mm overall from the back of the eye to the bolt end\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack plate\u003c\/th\u003e\n\u003ctd\u003eOval, 115 x 40 x 5mm, two 11mm holes at 73mm centres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack of plate to end of bracket\u003c\/th\u003e\n\u003ctd\u003e48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWasher plate\u003c\/th\u003e\n\u003ctd\u003eRound, 50mm across, 4mm thick, two interlocking halves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNut, plate and boss\u003c\/th\u003e\n\u003ctd\u003e21mm deep on the thread, boss 29mm across\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHole in the post\u003c\/th\u003e\n\u003ctd\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGate weight\u003c\/th\u003e\n\u003ctd\u003eUp to 500kg on two hinges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial and finish\u003c\/th\u003e\n\u003ctd\u003eSteel, bright zinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eAbout 0.67 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eIs this the right one?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYou want\u003c\/th\u003e\n\u003cth\u003eChoose\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM20, bolted to the gate, short thread\u003c\/td\u003e\n\u003ctd\u003eThis hinge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThe same hinge for gates up to 400kg\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adjustable-gate-hinge-m18-jointed-plates-back-plate\"\u003eM18 with jointed plates on back plate\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThe same hinge for gates up to 300kg\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adjustable-gate-hinge-m16-2\"\u003eM16 with jointed plates on back plate\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTo pass through both walls of a box post\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/premium-adjustable-gate-hinge-2\"\u003eM20 x 135mm thread on back plate\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA nut you weld to the post face\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adjustable-gate-hinge-m20-3\"\u003eM20 with weld nut and back plate\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA bracket you weld straight to the gate\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/premium-adjustable-gate-hinge-m20\"\u003eM20 with weld-on jointed plates\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt-on plates at both ends, for masonry\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adjustable-gate-hinge-m20\"\u003eM20 with 100mm post plate and 115mm gate plate\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFitting\u003c\/h2\u003e\n\u003cp\u003eHang each leaf on two hinges, one near the top and one near the bottom, with the bolts exactly in line one above the other. Drill a 22mm hole through the post section at each height. Pass the bolts through, then fit the washer plate and nut on the far face and nip them up. Support the gate on packers in its opening, hold each back plate flat on the stile, and fix it through both holes with M10 bolts, or M10 coach screws in timber. Remove the packers, wind the bolts until the leaf hangs square with an even gap, and tighten the nuts fully.\u003c\/p\u003e\n\u003cp\u003eThe nut, plate and boss take up 21mm of the 40mm thread, so this hinge suits post sections up to about 19mm thick where you can reach the far face. Fixings for the back plate are not included.\u003c\/p\u003e\n\u003ch2\u003eCare\u003c\/h2\u003e\n\u003cp\u003eGrease the pin and thread once a year, and check the nuts and plate fixings each spring, particularly on heavy gates. If you weld the back plate, grind off the zinc at the weld, keep the area ventilated and paint the finished weld with zinc-rich primer.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the price for one hinge?\u003c\/summary\u003e\u003cp\u003eYes, one complete hinge with bolt, bracket, pin, nut and washer plate. The minimum order is 5. Most gate leaves need two.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill one hinge carry 500kg?\u003c\/summary\u003e\u003cp\u003eNo. The 500kg rating is for a gate hung on two hinges, fixed into sound material.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat thickness of post will it go through?\u003c\/summary\u003e\u003cp\u003eUp to about 19mm. For a box section post, choose the M20 hinge with the 135mm thread linked above.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I weld the back plate instead of bolting it?\u003c\/summary\u003e\u003cp\u003eYes, on a steel gate. Grind off the zinc at the weld first and prime the weld afterwards.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs it left or right handed?\u003c\/summary\u003e\u003cp\u003eNeither. It works on either side of the gate.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eOrdering and delivery\u003c\/h2\u003e\n\u003cp\u003eWe offer Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For gate kits or larger quantities, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm stock and delivery before you order.\u003c\/p\u003e","brand":"Industrial Supplies Co","offers":[{"title":"Default Title","offer_id":63254313730435,"sku":"SSHF-578499-01","price":20.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/3002\/8778\/files\/adjustable-gate-hinge-m20-jointed-back-plate-on-grey-vehicle-gate.jpg?v=1794140128","url":"https:\/\/industrialsuppliesco.co.uk\/products\/adjustable-gate-hinge-m20-jointed-plates-back-plate","provider":"industrialsuppliesco.co.uk","version":"1.0","type":"link"}