{"product_id":"impact-advanced-coach-screws","title":"Impact Advanced Coach Screws","description":"\u003cp\u003eImpact Advanced Coach Screws are heavy-duty hex-drive fixings engineered for use with impact drivers, giving fast, secure fixing into timber structural applications. Available in M6 diameters from 25mm to 100mm, they deliver strong pull-out resistance without the need for a spanner or pre-drilling in many situations.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHardened steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive Type\u003c\/td\u003e\n\u003ctd\u003eHex (impact driver compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Size\u003c\/td\u003e\n\u003ctd\u003eM6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Lengths\u003c\/td\u003e\n\u003ctd\u003e25mm, 40mm, 50mm, 100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e100 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Profile\u003c\/td\u003e\n\u003ctd\u003eOptimised coarse thread for timber pull-out resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat they are used for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDecking frame construction, fixing joists to deck bearers and posts\u003c\/li\u003e\n\u003cli\u003eFencing and landscaping work, including post-to-rail connections and retaining structures\u003c\/li\u003e\n\u003cli\u003eHeavy-duty structural joinery such as stud walls, roof timbers, and engineered timber connections\u003c\/li\u003e\n\u003cli\u003eGarden buildings, pergolas, and general outdoor timber construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitting and handling\u003c\/h2\u003e\u003cp\u003eFor best results, use a calibrated impact driver set to a controlled torque to avoid over-driving the head into the timber surface. In hardwoods or dense treated timbers, a pilot hole is recommended to prevent splitting, particularly near board ends. Store fixings in a dry environment to prevent any surface oxidation before use.\u003c\/p\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDo impact coach screws need pre-drilling before fitting?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIn softer construction timbers such as C16 or C24 graded softwood, pre-drilling is often not required. However, for hardwood, dense treated timber, or fixings close to the end grain, a pilot hole the same diameter as the shank will reduce splitting risk and give a cleaner finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between a coach screw and a coach bolt?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA coach screw has a threaded shank and is driven directly into timber using a hex drive or spanner, whereas a coach bolt passes through the material and is secured with a nut and washer on the reverse. Coach screws are faster to fit where through-bolting is not practical or access is limited to one side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich length coach screw should I use for decking frames?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAs a general rule, the screw should penetrate the receiving timber by at least half its thickness. For a standard 47mm joist fixing into a 75mm or 100mm bearer, the M6 x 100mm option provides a secure bite. For lighter rail-to-post connections, the M6 x 50mm is a practical choice.\u003c\/p\u003e\u003cp\u003eThese fixings work particularly well alongside the structural and landscaping timber stocked at Nottage Timber Merchants. Browse our \u003ca href=\"\/collections\/decking\"\u003edecking timber range\u003c\/a\u003e for treated joists, bearers, and deck boards, available for collection from our Bridgend yard or with next-day delivery across the South Wales area.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Do impact coach screws need pre-drilling before fitting?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"In softer construction timbers such as C16 or C24 graded softwood, pre-drilling is often not required. However, for hardwood, dense treated timber, or fixings close to the end grain, a pilot hole the same diameter as the shank will reduce splitting risk and give a cleaner finish.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between a coach screw and a coach bolt?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A coach screw has a threaded shank and is driven directly into timber using a hex drive or spanner, whereas a coach bolt passes through the material and is secured with a nut and washer on the reverse. Coach screws are faster to fit where through-bolting is not practical or access is limited to one side.\"}},{\"@type\":\"Question\",\"name\":\"Which length coach screw should I use for decking frames?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"As a general rule, the screw should penetrate the receiving timber by at least half its thickness. For a standard 47mm joist fixing into a 75mm or 100mm bearer, the M6 x 100mm option provides a secure bite. For lighter rail-to-post connections, the M6 x 50mm is a practical choice.\"}}]}\u003c\/script\u003e","brand":"Nottage Timber Merchants","offers":[{"title":"M6 x 25mm (100pc)","offer_id":53109151891793,"sku":null,"price":3.52,"currency_code":"GBP","in_stock":true},{"title":"M6 X 40mm (100pc)","offer_id":53109153169745,"sku":null,"price":4.18,"currency_code":"GBP","in_stock":true},{"title":"M6 x 50mm (100pc)","offer_id":53109154971985,"sku":null,"price":5.0,"currency_code":"GBP","in_stock":true},{"title":"M6 x 100mm (100pc)","offer_id":53109155397969,"sku":null,"price":8.12,"currency_code":"GBP","in_stock":false},{"title":"M8 x 40mm (50pc)","offer_id":53109156479313,"sku":null,"price":3.72,"currency_code":"GBP","in_stock":true},{"title":"M8 x 50mm (50pc)","offer_id":53109161066833,"sku":null,"price":4.26,"currency_code":"GBP","in_stock":true},{"title":"M8 x 60mm (50pc)","offer_id":53109163229521,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"M8 x 70mm (50pc)","offer_id":53109164507473,"sku":null,"price":5.41,"currency_code":"GBP","in_stock":true},{"title":"M8 x 80mm (50pc)","offer_id":53109170864465,"sku":null,"price":5.88,"currency_code":"GBP","in_stock":false},{"title":"M8 x 100mm (50pc)","offer_id":53109175288145,"sku":null,"price":7.1,"currency_code":"GBP","in_stock":false},{"title":"M8 x 120mm (50pc)","offer_id":53109176009041,"sku":null,"price":8.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/1467\/1697\/files\/ImpactCoachScrews.jpg?v=1771662598","url":"https:\/\/www.timberonline.co.uk\/products\/impact-advanced-coach-screws","provider":"Nottage Timber Merchants","version":"1.0","type":"link"}