{"product_id":"black-stainless-steel-serrated-flange-nuts","title":"Black Serrated Flange Nuts M3–M10 — A2 Stainless DIN 6923","description":"\u003ch3\u003eWhy choose these Black Serrated Flange Nuts\u003c\/h3\u003e\n\u003cp\u003eOur Black Serrated Flange Nuts combine the corrosion resistance of A2 (18\/8) stainless steel with a chemical black oxide finish that gives a clean, low-glare appearance — ideal for marine fit-outs, automotive trim and architectural metalwork where a discreet look matters. Manufactured to DIN 6923, the integral flange replaces the need for a separate washer and the serrations on the underside bite into the joint surface, providing excellent resistance to vibration loosening.\u003c\/p\u003e\n\u003ch3\u003eSizes available\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eM3 — electronics enclosures and small assemblies\u003c\/li\u003e\n\u003cli\u003eM4 — brackets, panel work and light fittings\u003c\/li\u003e\n\u003cli\u003eM5 — furniture, signage and trim\u003c\/li\u003e\n\u003cli\u003eM6 — handrails, gates and general fabrication\u003c\/li\u003e\n\u003cli\u003eM8 — automotive, marine deck fittings and machinery\u003c\/li\u003e\n\u003cli\u003eM10 — structural fixings and heavy-duty installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePack options\u003c\/h3\u003e\n\u003cp\u003eAvailable in packs of 10 units for repairs and small projects, or packs of 20 for larger installs and trade use. Each nut is inspected before packing.\u003c\/p\u003e\n\u003ch3\u003eTypical uses\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVibration-prone joints — engines, exhaust systems, trailers and motorbike trim\u003c\/li\u003e\n\u003cli\u003eMarine deck and rail fittings where a black finish is preferred\u003c\/li\u003e\n\u003cli\u003eBlack ironmongery, gate hardware and architectural metalwork\u003c\/li\u003e\n\u003cli\u003eFurniture, signage and any installation where a separate washer would be awkward\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to fit\u003c\/h3\u003e\n\u003cp\u003ePlace the nut onto a standard metric bolt or stud with the serrated face against the work surface and tighten with a hex spanner or socket. The serrations are designed to embed into the joint — for soft or finished surfaces, place a plain washer underneath to protect the finish. Tighten to the bolt manufacturer’s recommended torque.\u003c\/p\u003e\n\u003ch3\u003eDelivery\u003c\/h3\u003e\n\u003cp\u003eSame-day dispatch on orders placed before 2pm, Monday to Friday. Free UK delivery on orders over £20. Tracked options available at checkout.\u003c\/p\u003e","brand":"Universal Hardware","offers":[{"title":"10 Units \/ M3","offer_id":54688991510865,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M3","price":4.95,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M3","offer_id":54688991543633,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M3","price":6.95,"currency_code":"GBP","in_stock":true},{"title":"10 Units \/ M4","offer_id":54688991576401,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M4","price":4.95,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M4","offer_id":54688991609169,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M4","price":6.95,"currency_code":"GBP","in_stock":true},{"title":"10 Units \/ M5","offer_id":54688991641937,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M5","price":5.25,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M5","offer_id":54688991674705,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M5","price":7.95,"currency_code":"GBP","in_stock":true},{"title":"10 Units \/ M6","offer_id":54688991707473,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M6","price":5.5,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M6","offer_id":54688991740241,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M6","price":7.95,"currency_code":"GBP","in_stock":true},{"title":"10 Units \/ M8","offer_id":54688991773009,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M8","price":5.95,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M8","offer_id":54688991805777,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M8","price":8.95,"currency_code":"GBP","in_stock":true},{"title":"10 Units \/ M10","offer_id":54688991838545,"sku":"FAS-FLANGENUT-A2-BLK-10-UNITS-M10","price":7.95,"currency_code":"GBP","in_stock":true},{"title":"20 Units \/ M10","offer_id":54688991871313,"sku":"FAS-FLANGENUT-A2-BLK-20-UNITS-M10","price":12.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1073\/9381\/0769\/files\/s-l1600-1-3.jpg?v=1787675035","url":"https:\/\/www.universal-hardware.co.uk\/products\/black-stainless-steel-serrated-flange-nuts","provider":"Universal Hardware","version":"1.0","type":"link"}