{"product_id":"schletter-flange-nut-m10-with-locking-teeth-din-en-1661-943000-022","title":"Schletter Flange Nut M10 with Locking Teeth, DIN EN 1661 | 943000-022","description":"\u003c!-- SEO Product Name: Schletter Flange Nut M10 with Locking Teeth, DIN EN 1661 | 943000-022 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThis \u003cstrong\u003eSchletter M10 flange nut\u003c\/strong\u003e features an \u003cstrong\u003eintegrated locking flange with anti-twist serrations\u003c\/strong\u003e, manufactured to \u003cstrong\u003eDIN EN 1661\u003c\/strong\u003e as the current-generation successor to Schletter's earlier DIN 6923 flange nut design.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe serrated underside bites into the mating surface as the nut is tightened, providing resistance to loosening under the vibration and thermal cycling typical of roof-mounted PV arrays, without needing a separate lock washer.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eM10\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eThread Size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eDIN EN 1661\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eStandard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eAnti-Twist Flange\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eLocking Feature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eNo Washer Needed\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eSimplified Fixing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eCorrosion-Resistant\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eMaterial Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center; min-width:100px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:800; line-height:1.2;\"\u003eSchletter\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; opacity:0.9; margin-top:4px; text-transform:uppercase; letter-spacing:0.03em;\"\u003eManufacturer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px; font-weight:700; color:#00625D; border-bottom:3px solid #008377CF; padding-bottom:8px; margin:28px 0 14px 0; text-transform:uppercase; letter-spacing:0.04em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; display:flex; gap:12px; align-items:flex-start; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:14px; min-width:220px;\"\u003e\n\u003cdiv style=\"flex-shrink:0; width:28px; height:28px; background:#008377CF; border-radius:50%; display:flex; align-items:center; justify-content:center;\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:4px;\"\u003eIntegrated Anti-Twist Flange\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eThe \u003cstrong\u003eserrated flange is built into the nut\u003c\/strong\u003e, gripping the mating surface as it's tightened and resisting loosening under vibration without a separate lock washer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; display:flex; gap:12px; align-items:flex-start; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:14px; min-width:220px;\"\u003e\n\u003cdiv style=\"flex-shrink:0; width:28px; height:28px; background:#008377CF; border-radius:50%; display:flex; align-items:center; justify-content:center;\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:4px;\"\u003eCurrent DIN EN 1661 Standard\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eManufactured to \u003cstrong\u003eDIN EN 1661\u003c\/strong\u003e, the current specification superseding Schletter's earlier DIN 6923 M10 flange nut design.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; display:flex; gap:12px; align-items:flex-start; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:14px; min-width:220px;\"\u003e\n\u003cdiv style=\"flex-shrink:0; width:28px; height:28px; background:#008377CF; border-radius:50%; display:flex; align-items:center; justify-content:center;\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:4px;\"\u003eReduces Loose Parts on Site\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eCombining the \u003cstrong\u003enut and locking function in one part\u003c\/strong\u003e reduces the number of separate washers installers need to track and fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; display:flex; gap:12px; align-items:flex-start; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:14px; min-width:220px;\"\u003e\n\u003cdiv style=\"flex-shrink:0; width:28px; height:28px; background:#008377CF; border-radius:50%; display:flex; align-items:center; justify-content:center;\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:4px;\"\u003eSuited to Outdoor PV Applications\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eDesigned for the \u003cstrong\u003evibration and thermal cycling\u003c\/strong\u003e typical of roof-mounted solar arrays over their working life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; display:flex; gap:12px; align-items:flex-start; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:14px; min-width:220px;\"\u003e\n\u003cdiv style=\"flex-shrink:0; width:28px; height:28px; background:#008377CF; border-radius:50%; display:flex; align-items:center; justify-content:center;\"\u003e\u003csvg width=\"14\" height=\"14\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"3\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:4px;\"\u003eWide Compatibility Across Schletter M10 Hardware\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAs a standard M10 fastener, it pairs with \u003cstrong\u003eSchletter's M10 bolts, hanger bolts and connector hardware\u003c\/strong\u003e across multiple system ranges.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px; font-weight:700; color:#00625D; border-bottom:3px solid #008377CF; padding-bottom:8px; margin:28px 0 14px 0; text-transform:uppercase; letter-spacing:0.04em;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 20px 0; border-radius:0 0 6px 6px; overflow:hidden; border:1px solid #D9EDEA; border-top:none;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:13px; letter-spacing:0.05em; text-transform:uppercase; padding:9px 14px; border-radius:6px 6px 0 0; margin-top:14px;\"\u003eFastener Specification\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; color:#333333; font-size:14px;\"\u003eThread Size\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; color:#222222; font-size:14px;\"\u003eM10\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; color:#333333; font-size:14px;\"\u003eManufacturing Standard\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; color:#222222; font-size:14px;\"\u003eDIN EN 1661\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#E6F4F3; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; color:#333333; font-size:14px;\"\u003eLocking Feature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; color:#222222; font-size:14px;\"\u003eIntegrated anti-twist serrated flange\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 46%; padding:9px 14px; font-weight:600; color:#333333; font-size:14px;\"\u003eSupersedes\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:9px 14px; color:#222222; font-size:14px;\"\u003eSchletter M10 flange nut to DIN 6923 (943912-010)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px; font-weight:700; color:#00625D; border-bottom:3px solid #008377CF; padding-bottom:8px; margin:28px 0 14px 0; text-transform:uppercase; letter-spacing:0.04em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 8px 0;\"\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:12px 16px; background:#008377CF; color:#ffffff; font-size:15px; font-weight:700; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between;\"\u003eWhat does the anti-twist flange do?\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.65; background:#ffffff;\"\u003eThe serrated flange integrated into the nut digs into the surface it is tightened against, resisting loosening from vibration and thermal movement without needing a separate lock washer.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:12px 16px; background:#008377CF; color:#ffffff; font-size:15px; font-weight:700; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between;\"\u003eIs this the same as Schletter's earlier M10 flange nut?\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.65; background:#ffffff;\"\u003eThis nut is manufactured to DIN EN 1661, the current standard that has replaced Schletter's earlier DIN 6923 flange nut design as that part is phased out.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:12px 16px; background:#008377CF; color:#ffffff; font-size:15px; font-weight:700; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between;\"\u003eDo I need a washer with this nut?\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.65; background:#ffffff;\"\u003eNo, the integrated flange performs the locking function, so a separate lock washer is not required.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:12px 16px; background:#008377CF; color:#ffffff; font-size:15px; font-weight:700; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between;\"\u003eWhat is this nut typically used with?\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.65; background:#ffffff;\"\u003eIt's used as a standard M10 fastener across various Schletter mounting connections, including bolted rail and connector hardware.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:12px 16px; background:#008377CF; color:#ffffff; font-size:15px; font-weight:700; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between;\"\u003eIs this nut suitable for outdoor exposure?\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#ffffff\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; color:#2B2B2B; line-height:1.65; background:#ffffff;\"\u003eYes, it is designed for the vibration and weathering conditions typical of roof-mounted PV installations.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Schletter","offers":[{"title":"Default Title","offer_id":65782253093213,"sku":"943000-022","price":0.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SchletterSerratedM10FlangeNut943912-010.webp?v=1762430074","url":"https:\/\/qualityheating.co.uk\/products\/schletter-flange-nut-m10-with-locking-teeth-din-en-1661-943000-022","provider":"AIZO Quality Heating","version":"1.0","type":"link"}