{"product_id":"5mm-x-70mm-double-countersunk-chipboard-screws-box-of-200","title":"5mm x 70mm Double Countersunk Chipboard Screws | Box of 200","description":"\u003c!-- SEO Product Name: Tekwarm 5mm x 70mm Double Countersunk Chipboard Screws | Box of 200 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#222222; line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eThe \u003cstrong\u003eTekwarm 5mm x 70mm Chipboard \u0026amp; Woodscrew\u003c\/strong\u003e is a \u003cstrong\u003edouble countersunk, wax lubricated single thread screw\u003c\/strong\u003e for fixing \u003cstrong\u003e22mm Tekwarm routed chipboard and OSB panels to floor joists\u003c\/strong\u003e. Each box holds \u003cstrong\u003e200 screws\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eAt \u003cstrong\u003e70mm\u003c\/strong\u003e long, the screw passes through the 22mm panel and leaves \u003cstrong\u003e48mm of thread in the joist\u003c\/strong\u003e. The \u003cstrong\u003edouble countersunk head\u003c\/strong\u003e reduces head shear and sits flush, the \u003cstrong\u003e40 degree deep single thread\u003c\/strong\u003e gives high pull-out resistance, and the \u003cstrong\u003e25 degree sharp point\u003c\/strong\u003e starts quickly.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5 x 70mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eScrew size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e200\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eScrews per box\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eDouble\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eCountersunk head\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eWax\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eLubricated thread\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e25 \/ panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003e2400 x 600mm chipboard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e12 \/ panel\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003e1200 x 600mm OSB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #B3261E; background:#FDECEA; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B3261E; margin-bottom:4px;\"\u003eFix into the joists, with clearance at the walls\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eFix every panel into the \u003cstrong\u003ejoists below\u003c\/strong\u003e, with all edges supported by joists or noggins and a \u003cstrong\u003e10mm gap at the walls\u003c\/strong\u003e. Screws go in \u003cstrong\u003ebefore the pipe is laid\u003c\/strong\u003e; pre-drill near the channels and countersink so heads sit below the surface.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #B26A00; background:#FFF4E0; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B26A00; margin-bottom:4px;\"\u003eFixing numbers and pattern\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eTekwarm recommends \u003cstrong\u003e25 screws per 2400 x 600mm chipboard panel\u003c\/strong\u003e and \u003cstrong\u003e12 screws per 1200 x 600mm OSB panel\u003c\/strong\u003e. Fix at each joist crossing, typically \u003cstrong\u003e150mm in from each long edge\u003c\/strong\u003e of the 600mm width, and apply adhesive to the top of the joists as well.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #008377CF; background:#00837714; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:4px;\"\u003eCoverage per box\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eA box of 200 fixes about \u003cstrong\u003e8 chipboard panels (around 11.5 m²)\u003c\/strong\u003e or \u003cstrong\u003e16 OSB panels (around 11.5 m²)\u003c\/strong\u003e at the recommended numbers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px;\"\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eFixes panels to joists\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eSecures \u003cstrong\u003e22mm routed chipboard and OSB panels\u003c\/strong\u003e directly to \u003cstrong\u003etimber floor joists\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e70mm length\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003ePasses through the 22mm panel for \u003cstrong\u003e48mm of embedment\u003c\/strong\u003e into the joist.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eDouble countersunk head\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eReduces the likelihood of head shear\u003c\/strong\u003e and assists countersinking so the panel surface stays flat.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eWax lubricated\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eWax lubrication\u003c\/strong\u003e speeds insertion, adds \u003cstrong\u003eextra driving torque\u003c\/strong\u003e and improves corrosion resistance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e40° deep single thread\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eProvides a secure fixing with \u003cstrong\u003ehigh pull-out resistance\u003c\/strong\u003e in timber.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e25° sharp point\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eSharp point and single lead\u003c\/strong\u003e give a fast start and improved thread acceptance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eProduct details\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eTekwarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eProduct\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eChipboard \u0026amp; Woodscrew, double countersunk\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eSize\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e5mm x 70mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eQuantity\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e200 per box\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eScrew features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eHead\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eDouble countersunk\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eFinish\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eWax lubricated\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eThread\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e40 degree deep single thread\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003ePoint\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e25 degree sharp point, single lead\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eSuitable for\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eTimber and man-made boards; masonry with a plastic plug\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eUsage with Tekwarm systems\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eIntended use\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eFixing 22mm routed chipboard and OSB panels to floor joists\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eChipboard 2400 x 600mm\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e25 screws per panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eOSB 1200 x 600mm\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e12 screws per panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eEmbedment\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e48mm into the joist through a 22mm panel\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eFixing notes\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePre-drill near channels; adhesive on top of joists; 10mm gap at walls; panel edges supported on joists or noggins\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eCoverage per box\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eAbout 11.5 m² at the recommended numbers\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhat are these screws used for?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eThey fix \u003cstrong\u003e22mm Tekwarm routed chipboard and OSB panels\u003c\/strong\u003e to \u003cstrong\u003efloor joists\u003c\/strong\u003e, before the heating pipe is laid.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eHow many screws does each panel need?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eTekwarm recommends \u003cstrong\u003e25 screws per 2400 x 600mm chipboard panel\u003c\/strong\u003e and \u003cstrong\u003e12 per 1200 x 600mm OSB panel\u003c\/strong\u003e. A box of 200 covers around \u003cstrong\u003e11.5 m²\u003c\/strong\u003e at those numbers.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhere do the screws go?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eFix into the joist at each crossing, typically \u003cstrong\u003e150mm in from each long edge\u003c\/strong\u003e of the 600mm panel width. Support all edges on joists or noggins and leave a \u003cstrong\u003e10mm gap at the walls\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eShould I use adhesive as well?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eYes. Apply \u003cstrong\u003eadhesive to the top of each joist\u003c\/strong\u003e and to the tongue and groove joints (not near the pipe channels), then fix with screws. Pre-drill near the channels.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eCan I use these to fix overlay boards?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eNo. These 70mm screws are for the panels. Overlay boards need shorter screws that cannot reach the pipe, such as the \u003cstrong\u003e20mm or 25mm\u003c\/strong\u003e Tekwarm screws.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhat do the wax and the thread do?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003e\n\u003cstrong\u003eWax lubrication\u003c\/strong\u003e speeds insertion with extra driving torque and corrosion resistance, while the \u003cstrong\u003e40 degree deep single thread\u003c\/strong\u003e gives high pull-out resistance.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Tekwarm","offers":[{"title":"Default Title","offer_id":68386610315654,"sku":"RTCHIP-R-Screw","price":15.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/70mm-chipboard-woodscrews-double-countersunk-5mm-x-70mm.jpg?v=1794128911","url":"https:\/\/qualityheating.co.uk\/products\/5mm-x-70mm-double-countersunk-chipboard-screws-box-of-200","provider":"AIZO Quality Heating","version":"1.0","type":"link"}