{"product_id":"contre-ecrou-fonte-noire","title":"Black Cast Iron Lock Nut","description":"\u003cul\u003e\n\u003cli\u003eMaterial : Black malleable iron\u003c\/li\u003e\n\u003cli\u003eColour : Grey \/ Dark grey\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe black cast iron lock nut (ref. 312) is a recessed hexagonal nut that screws onto a male thread to \u003cstrong\u003elock a fitting in position\u003c\/strong\u003e. It prevents accidental loosening caused by vibrations or thermal stress.\u003c\/p\u003e\n\n\u003ch2\u003eWhat is a lock nut used for?\u003c\/h2\u003e\n\u003cp\u003eIn plumbing, some fittings (nipple, extension, valve…) must be immobilised after tightening. The lock nut screws against the female fitting into which the male thread is engaged: the two pieces lock against each other. This \u003cstrong\u003edouble-locking\u003c\/strong\u003e principle is essential on installations subject to vibrations or thermal cycles.\u003c\/p\u003e\n\u003cp\u003eIn industrial-style decoration, the lock nut can also serve as an \u003cstrong\u003eaesthetic element\u003c\/strong\u003e or a stop on a threaded pipe.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStandard :\u003c\/strong\u003e Manufactured per \u003cstrong\u003eEN 10242\u003c\/strong\u003e and \u003cstrong\u003eISO 49\u003c\/strong\u003e. Malleable iron grade EN-GJMW-400-5 (per EN 1562).\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThread :\u003c\/strong\u003e Female parallel thread (Rp), per ISO 7-1 (BSP).\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReliability :\u003c\/strong\u003e 100% leak-tested.\u003c\/li\u003e\n\u003cli\u003eMaterial : black malleable iron\u003c\/li\u003e\n\u003cli\u003eColour : \u003cstrong\u003edark grey\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService conditions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMax temperature :\u003c\/strong\u003e 155°C (water).\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatibility :\u003c\/strong\u003e Drinking water, wastewater, gas, steam, non-corrosive liquids.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDimensions\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:20px;\"\u003e\n\u003cdiv style=\"text-align:center;\"\u003e\u003cimg style=\"float:none;\" alt=\"Technical drawing black cast iron lock nut — dimensions a, e, s\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2439\/6099\/files\/contre-ecrou-fonte-310-dimensions.jpg?v=1772729860\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003csmall\u003eScroll the table horizontally to see all measurements.\u003c\/small\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;text-align:center;font-size:0.85em;min-width:550px;\"\u003e\n\u003cthead style=\"background-color:#333;color:#fff;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;\"\u003eSize (inches)\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;\"\u003eDN\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;\"\u003eØ int×ext (mm)\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;background-color:#444;\"\u003ea (mm)\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;background-color:#444;\"\u003ee approx. (mm)\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;background-color:#444;\"\u003es (mm)\u003c\/th\u003e\n\u003cth style=\"padding:10px;border:1px solid #ddd;background-color:#f4f4f4;color:#333;\"\u003eWeight (kg)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e1\/4\"\u003c\/td\u003e\u003ctd\u003eDN8\u003c\/td\u003e\u003ctd\u003e8×13\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e6\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e22\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e19\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,013\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\u003ctd\u003e3\/8\"\u003c\/td\u003e\u003ctd\u003eDN10\u003c\/td\u003e\u003ctd\u003e12×17\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e8\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e28\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e24\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,021\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e1\/2\"\u003c\/td\u003e\u003ctd\u003eDN15\u003c\/td\u003e\u003ctd\u003e15×21\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e8\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e37\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e32\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,028\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\u003ctd\u003e3\/4\"\u003c\/td\u003e\u003ctd\u003eDN20\u003c\/td\u003e\u003ctd\u003e20×27\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e9\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e42\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e36\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,033\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e1\"\u003c\/td\u003e\u003ctd\u003eDN25\u003c\/td\u003e\u003ctd\u003e26×34\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e10\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e53\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e46\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,065\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\u003ctd\u003e1\"1\/4\u003c\/td\u003e\u003ctd\u003eDN32\u003c\/td\u003e\u003ctd\u003e33×42\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e11\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e62\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e54\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,095\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e1\"1\/2\u003c\/td\u003e\u003ctd\u003eDN40\u003c\/td\u003e\u003ctd\u003e40×49\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e12\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e68\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e60\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,110\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\u003ctd\u003e2\"\u003c\/td\u003e\u003ctd\u003eDN50\u003c\/td\u003e\u003ctd\u003e50×60\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e13\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e86\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e75\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,170\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e2\"1\/2\u003c\/td\u003e\u003ctd\u003eDN65\u003c\/td\u003e\u003ctd\u003e65×76\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e19\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e110\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e95\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,364\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\u003ctd\u003e3\"\u003c\/td\u003e\u003ctd\u003eDN80\u003c\/td\u003e\u003ctd\u003e80×90\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e22\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e120\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e105\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,421\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e4\"\u003c\/td\u003e\u003ctd\u003eDN100\u003c\/td\u003e\u003ctd\u003e102×115\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e—\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e—\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u003cstrong\u003e—\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e0,960\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003csmall\u003e\u003cem\u003ea = height. e = corner-to-corner width. s = across flats.\u003c\/em\u003e\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRelated\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible products :\u003c\/strong\u003e \u003ca href=\"\/collections\/black-steel-pipes-1\"\u003eBlack steel pipes\u003c\/a\u003e · \u003ca href=\"\/collections\/black-cast-iron-fittings\"\u003eBlack cast iron fittings\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUseful guides :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003e\u003ca href=\"\/blogs\/tutorials-1\/make-wall-shelves-with-plumbing-fittings\"\u003eMake wall shelves with plumbing fittings\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Home Invasion","offers":[{"title":"1\/4\"","offer_id":53676479643975,"sku":"1003120000800\u002614312008","price":3.0,"currency_code":"USD","in_stock":true},{"title":"3\/8\"","offer_id":53676479676743,"sku":"1003120001200\u002614312010","price":4.0,"currency_code":"USD","in_stock":true},{"title":"1\/2\"","offer_id":53676479709511,"sku":"1003120001500\u002614312015","price":2.0,"currency_code":"USD","in_stock":true},{"title":"3\/4\"","offer_id":53676479742279,"sku":"1003120002000\u002614312020","price":3.0,"currency_code":"USD","in_stock":true},{"title":"1\"","offer_id":53676479775047,"sku":"1003120002600\u002614312025","price":3.0,"currency_code":"USD","in_stock":true},{"title":"1\"1\/4","offer_id":53676479807815,"sku":"1003120003300\u002614312032","price":5.0,"currency_code":"USD","in_stock":true},{"title":"1\"1\/2","offer_id":53676479840583,"sku":"1003120004000\u002614312040","price":5.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":53676479873351,"sku":"1003120005000\u002614312050","price":10.0,"currency_code":"USD","in_stock":true},{"title":"2\"1\/2","offer_id":53676479906119,"sku":"1003120006600\u002614312065","price":17.0,"currency_code":"USD","in_stock":true},{"title":"3\"","offer_id":53676479938887,"sku":"1003120008000\u002614312080","price":21.0,"currency_code":"USD","in_stock":true},{"title":"4\"","offer_id":53676479971655,"sku":"1003120010200\u002614312100","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2439\/6099\/files\/contre-ecrou-plomberie-fonte-noire.jpg?v=1775751777","url":"https:\/\/home-invasion.com\/products\/black-cast-iron-lock-nut","provider":"Home Invasion","version":"1.0","type":"link"}