{"product_id":"king-chain-no-1-x-20-ft-double-loop-tenso-chain-zinc-plated-514811","title":"King Chain No. 1 x 20 ft. Double Loop Tenso Chain, Zinc Plated","description":"\u003cstyle\u003e\n.gb-wrap{max-width:100%;font-size:15px;line-height:1.6}\n.gb-wrap h2{font-size:1.25rem;margin:0 0 .6em}\n.gb-intro p{margin:0 0 .9em}\n.gb-hl{margin:0 0 1.2em 1.1em;padding:0}\n.gb-hl li{margin:.32em 0}\n.gb-acc{border-top:1px solid #ddd;padding:.65em 0}\n.gb-acc:last-of-type{border-bottom:1px solid #ddd}\n.gb-acc\u003esummary{cursor:pointer;font-weight:600;list-style:none;padding:.2em 0}\n.gb-acc\u003esummary::-webkit-details-marker{display:none}\n.gb-acc\u003esummary::after{content:\"+\";float:right;font-weight:400}\n.gb-acc[open]\u003esummary::after{content:\"\\2013\"}\n.gb-acc .gb-body{padding:.4em 0 .9em}\n.gb-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}\n.gb-scroll table{border-collapse:collapse;min-width:520px;width:100%;font-size:14px}\n.gb-scroll th,.gb-scroll td{border:1px solid #ddd;padding:.45em .6em;text-align:left}\n.gb-scroll th{background:#f6f6f6;font-weight:600}\n.gb-wrap ul{margin:0 0 .9em 1.1em;padding:0}\n.gb-wrap li{margin:.25em 0}\n\u003c\/style\u003e\n\u003cdiv class=\"gb-wrap\"\u003e\n\u003ch2\u003eKing Chain No. 1 x 20 ft. Double Loop Tenso Chain\u003c\/h2\u003e\n\u003cdiv class=\"gb-intro\"\u003e\n\u003cp\u003eTenso chain, also sold as double loop, lion or knotted chain, is formed rather than welded: each link is bent back on itself so the chain holds together without a weld. Twenty feet of it, zinc plated, made to NACM standards.\u003c\/p\u003e\n\u003cp\u003eThe reason to choose it over welded chain is that it will not bind or kink when it is twisted. On a gate, a porch swing or a tie-out that turns all day, welded chain works itself into a knot and this does not. It is not heat treated and it is not a lifting chain. Never exceed the safe working load, and never use it for overhead lifting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul class=\"gb-hl\"\u003e\n\u003cli\u003e155 lb. safe working load\u003c\/li\u003e\n\u003cli\u003eNo. 1 trade size, 20 ft. length\u003c\/li\u003e\n\u003cli\u003eWeldless double loop construction\u003c\/li\u003e\n\u003cli\u003eWill not bind or kink when rotated\u003c\/li\u003e\n\u003cli\u003eZinc plated low carbon steel, made to NACM specifications\u003c\/li\u003e\n\u003cli\u003eCommonly used on playground and gym equipment, cattle ties, kennel leads, gates, doors, porch swings and tie-out chains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdetails class=\"gb-acc\"\u003e\u003csummary\u003eSpecifications\u003c\/summary\u003e\u003cdiv class=\"gb-body\"\u003e\n\u003cdiv class=\"gb-scroll\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e514811\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrade size\u003c\/td\u003e\n\u003ctd\u003eNo. 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e20 ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eDouble loop, weldless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eLow carbon steel, not heat treated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eZinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eNACM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafe working load\u003c\/td\u003e\n\u003ctd\u003e155 lb. (70 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"gb-acc\"\u003e\u003csummary\u003eQuestions\u003c\/summary\u003e\u003cdiv class=\"gb-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is it called double loop?\u003c\/strong\u003e\u003cbr\u003eEach link is formed with two loops rather than welded shut, which is where the other names come from as well: lion chain and knotted chain are the same thing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs weldless weaker than welded?\u003c\/strong\u003e\u003cbr\u003eAt the same trade size it carries less than welded machine chain, which is why the safe working load is stated rather than assumed. What it gives back is that it does not bind when twisted.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it on a swing?\u003c\/strong\u003e\u003cbr\u003eKingChain list porch swings and playground and gym equipment among the uses, inside the 155 lb. safe working load. It is not for overhead lifting, which is a different thing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it rust outdoors?\u003c\/strong\u003e\u003cbr\u003eZinc plating handles ordinary weather. It is a plating, not a hot-dip galvanizing, so a chain that lives outside permanently will eventually show rust at wear points where the plating has rubbed through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I shorten it?\u003c\/strong\u003e\u003cbr\u003eOpen a link with pliers and close it again, or join the ends with a quick link, which is cleaner and keeps the chain reusable at full length.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003cp style=\"font-size:13px;color:#666;margin-top:1.2em;\"\u003e\u003cem\u003eSpecifications and load ratings are provided for reference only; please verify with the manufacturer before use in load-bearing or safety-critical applications.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"KINGCHAIN","offers":[{"title":"Default Title","offer_id":55096462508351,"sku":"514811","price":12.44,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/4901\/7919\/files\/Screenshot2026-05-25110856.png?v=1779732586","url":"https:\/\/griffbuildingsupplies.com\/products\/king-chain-no-1-x-20-ft-double-loop-tenso-chain-zinc-plated-514811","provider":"Griff Building Supplies","version":"1.0","type":"link"}