{"product_id":"copy-of-grk-fasteners-r4™-multi-purpose-framing-decking-screws-8-x-2-1-2-in","title":"GRK Fasteners R4™ Multi-Purpose Framing \u0026 Decking Screws #8 x 2-1\/2 in.","description":"\u003cp\u003eGRK’s R4™ self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment.\u003c\/p\u003e\n\u003cp\u003eThis design enhances the R4™’s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head.\u003c\/p\u003e\n\u003cp\u003eR4™ screws 3-1\/8” and longer have a four threaded CEE Thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw’s drawing strength and reduces the friction on the screw shank that lowers the driving torque.\u003c\/p\u003e\n\u003cp\u003eFast Bite Tip: Eliminates pre-drilling and provides a fast start for one-step installation.\u003cbr\u003eW-Cut™: Low torque, faster drive. \u003cbr data-mce-fragment=\"1\"\u003ePrecision Fit: Reduces wobble between R4 screws and GRK bits for improved productivity.\u003cbr data-mce-fragment=\"1\"\u003eStar Drive: Zero stripping, with 6 points of contact.\u003cbr\u003eOptimized Thread Length: Improves clamping force for increased drawing power\u003cbr\u003eCEE Thread: Enlarges hole to reduce splitting.\u003cbr\u003eCutting Teeth: Cuts wood fiber \u0026amp; provides flush seating.\u003cbr\u003eGRK Head Markings: Easy identification of genuine GRK screws.\u003cbr\u003eESR-3201 Approved for structural applications.\u003cbr\u003eClimatek™ Coating is AC257 code approved for use in treated lumber. \u003cbr\u003e For interior \/ exterior use in; wood, plastic, cement fiber board, particle board, sheet metal, wood decking and melamine.\u003cbr\u003eAlso available in PHEINOX™ 305 and 316 grade Stainless Steel.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"GRK Fasteners","offers":[{"title":"#8 x 2-1\/2\"","offer_id":43492860624984,"sku":"5914189","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/9751\/6120\/files\/product-media-334406.jpg?v=1765214008","url":"https:\/\/barohardware.com\/products\/copy-of-grk-fasteners-r4%e2%84%a2-multi-purpose-framing-decking-screws-8-x-2-1-2-in","provider":"Baro Hardware","version":"1.0","type":"link"}