{"product_id":"4-8-x-45mm-masonry-screws-50mm-washers","title":"4.8 x 45mm Masonry Screws \u0026 50mm Washers","description":"\u003c!-- SEO Product Name: Tekwarm 4.8 x 45mm Masonry Screws \u0026 50mm Washers | PR008935 --\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 UFH Masonry Screw and Washer Kit\u003c\/strong\u003e gives a secure fixing for \u003cstrong\u003eTekwarm 20mm UFH boards\u003c\/strong\u003e into \u003cstrong\u003econcrete, screed and masonry substrates\u003c\/strong\u003e. Each box holds \u003cstrong\u003e100 self-tapping 4.8 x 45mm screws\u003c\/strong\u003e and \u003cstrong\u003e100 matching 50mm washers (stress plates)\u003c\/strong\u003e, 200 components in total.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eThe \u003cstrong\u003ecountersunk, EvoShield coated screw\u003c\/strong\u003e is a \u003cstrong\u003eself-tapping carbon steel fixing\u003c\/strong\u003e with a \u003cstrong\u003enail (pyramidal) point\u003c\/strong\u003e, used with a \u003cstrong\u003e4.35mm pilot hole\u003c\/strong\u003e. The \u003cstrong\u003e50mm stress plate\u003c\/strong\u003e spreads the load and \u003cstrong\u003estops the board pulling over the screw head\u003c\/strong\u003e, protecting the 20mm board.\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;\"\u003e4.8 x 45mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eSelf-tapping screw\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;\"\u003e50mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eWasher \/ stress plate\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;\"\u003e100 + 100\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eScrews and washers\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;\"\u003e20mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eBoard thickness\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;\"\u003e4.35mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003ePilot hole\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;\"\u003e5 minimum\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eFixings per 1200 x 600mm board\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;\"\u003ePre-drill a 4.35mm pilot hole for every fixing\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eA \u003cstrong\u003e4.35mm pilot hole\u003c\/strong\u003e is required in \u003cstrong\u003eall substrate types\u003c\/strong\u003e, not just hard masonry. Keep surfaces clean and free from dust, hold fixings at least \u003cstrong\u003e50mm apart and 50mm from edges\u003c\/strong\u003e in concrete, and keep installation torque \u003cstrong\u003ebelow 3 Nm\u003c\/strong\u003e to avoid over-tightening.\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;\"\u003eFor Tekwarm 20mm boards only\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eThe screw suits fixtures from \u003cstrong\u003e0 to 20mm thick\u003c\/strong\u003e with a nominal \u003cstrong\u003e25mm embedment\u003c\/strong\u003e. Use at least \u003cstrong\u003e5 screws and washers per 1200 x 600mm board\u003c\/strong\u003e. For fixing into timber, use the Tekwarm timber screw and washer kit instead.\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;\"\u003eWhy the stress plate matters\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eStress plates should be used \u003cstrong\u003ewhenever fixing Tekwarm 20mm UFH boards\u003c\/strong\u003e to distribute the load and prevent the board being pulled over the head of the fastener.\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;\"\u003eSelf-tapping masonry screw\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e4.8 x 45mm countersunk screw\u003c\/strong\u003e with a \u003cstrong\u003enail (pyramidal) point\u003c\/strong\u003e for concrete, screed and masonry.\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;\"\u003eEvoShield corrosion protection\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eCoated with \u003cstrong\u003eEvoShield 500 hour NSST-resistant\u003c\/strong\u003e aluminium and zinc flake bound in resin.\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;\"\u003e50mm stress plates\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e100 steel washers\u003c\/strong\u003e distribute load evenly and \u003cstrong\u003eprevent damage to the 20mm board\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;\"\u003eStrong carbon steel\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eSAE C1022 carbon steel\u003c\/strong\u003e screw for a dependable fixing.\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;\"\u003eComplete kit\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e100 screws plus 100 washers\u003c\/strong\u003e in one box, so every fixing has its stress plate.\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;\"\u003eDesigned for Tekwarm 20mm boards\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eMatched to \u003cstrong\u003eTekwarm 20mm UFH boards\u003c\/strong\u003e, with \u003cstrong\u003e25mm nominal embedment\u003c\/strong\u003e into the substrate.\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;\"\u003ePack contents\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;\"\u003eManufacturer part number\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePR008935\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;\"\u003eScrews\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e100 x 4.8 x 45mm self-tapping\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;\"\u003eWashers\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e100 x 50mm stress plates\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;\"\u003eTotal components\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e200\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;\"\u003eSelf-tapping screw\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;\"\u003e4.8 x 45.0mm\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;\"\u003eHead\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eCountersunk\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;\"\u003eDrive\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePhillips No. 2\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;\"\u003eNail (pyramidal)\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;\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eSAE C1022 carbon steel\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;\"\u003eCoating\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eEvoShield 500 hour NSST-resistant (aluminium\/zinc flake bound in resin)\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;\"\u003eFixture thickness\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e0 to 20mm\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;\"\u003eStress plate \/ washer\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;\"\u003e50mm diameter, round\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;\"\u003eNominal thickness\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e0.5mm\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;\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eCarbon steel with Galvalume (aluminium and zinc) coating\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;\"\u003eFunction\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eDistributes screw load and stops the board pulling over the screw head\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;\"\u003eInstallation\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;\"\u003ePilot hole\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e4.35mm, required for all substrate types\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;\"\u003eClearance hole in board\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e6mm\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;\"\u003eNominal embedment\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e25mm\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;\"\u003eInstallation torque\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eBelow 3 Nm\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;\"\u003eMinimum spacing\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e50mm\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;\"\u003eConcrete\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eMinimum member thickness 100mm; minimum edge distance 50mm\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;\"\u003eFixings per board\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eAt least 5 per 1200 x 600mm board\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;\"\u003eSubstrates\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eConcrete, screed and masonry\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 is in the box?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eThe box holds \u003cstrong\u003e100 self-tapping 4.8 x 45mm screws\u003c\/strong\u003e and \u003cstrong\u003e100 matching 50mm washers (stress plates)\u003c\/strong\u003e, 200 components in total.\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;\"\u003eDo I need to drill a pilot hole?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eYes. Drill a \u003cstrong\u003e4.35mm pilot hole\u003c\/strong\u003e into the substrate before fixing. This is required for \u003cstrong\u003eall substrate types\u003c\/strong\u003e, not only harder masonry. Keep the surface clean and dust free.\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 fixings per board?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eUse \u003cstrong\u003eat least 5 screws and washers per 1200 x 600mm board\u003c\/strong\u003e, keeping a \u003cstrong\u003eminimum 50mm spacing\u003c\/strong\u003e between fixings. A box of 100 therefore fixes at least 20 boards (about 14.4 m²).\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;\"\u003eWhich boards and substrates is it for?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eIt is for \u003cstrong\u003eTekwarm 20mm UFH boards\u003c\/strong\u003e (fixtures up to 20mm thick) fixed into \u003cstrong\u003econcrete, screed and masonry\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;\"\u003eWhy do I need the stress plate?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eThe plate \u003cstrong\u003edistributes the load\u003c\/strong\u003e and \u003cstrong\u003eprevents the board pulling over the screw head\u003c\/strong\u003e, so the 20mm board is not damaged.\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 tight should I fix it?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eKeep installation torque \u003cstrong\u003ebelow 3 Nm\u003c\/strong\u003e. Over-tightening can damage the board or strip the pilot hole.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Tekwarm","offers":[{"title":"Default Title","offer_id":68386612347270,"sku":"PR008935","price":27.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ufh-self-tapping-screws-and-washer-for-20mm-boards-box-of-100.webp?v=1794129187","url":"https:\/\/qualityheating.co.uk\/products\/4-8-x-45mm-masonry-screws-50mm-washers","provider":"AIZO Quality Heating","version":"1.0","type":"link"}