{"product_id":"securfix-performance-screws-4-5-x-70mm-box-of-100","title":"Securfix Performance Screws 4.5 x 70mm, Box of 100","description":"\u003cp\u003e4.5 x 70mm performance screws from Securfix come 100 to a box, designed to start quickly and drive without a pilot hole. The thread is partially serrated and designed to resist jacking, with double corrosion resistance. The manufacturer says there is no risk of splitting or snapping, and no pre-drilling.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSize 4.5 x 70mm, box of 100\u003c\/li\u003e\n\u003cli\u003eSelf-drilling and self-countersinking\u003c\/li\u003e\n\u003cli\u003eNo pilot hole needed\u003c\/li\u003e\n\u003cli\u003eAnti-friction thread prevents jacking\u003c\/li\u003e\n\u003cli\u003ePartially serrated thread\u003c\/li\u003e\n\u003cli\u003eDouble corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSecurfix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e4.5 x 70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack size\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhich one do I need?\u003c\/h3\u003e\u003cp\u003eSize 4.5 x 70mm gives diameter first and length second. Compare the length with the combined thickness of your parts so the point does not break out of the back.\u003c\/p\u003e\u003ch3\u003eHow to use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eMark the positions and check there are no pipes or cables behind.\u003c\/li\u003e\n\u003cli\u003eSkip the pilot hole, as the manufacturer says none is needed for a self-drilling screw.\u003c\/li\u003e\n\u003cli\u003eUse a PZ bit that fits the head and keep it square while you drive.\u003c\/li\u003e\n\u003cli\u003eLet the self-countersinking head finish flush with the surface, then stop.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch4\u003eWhat does the box of 4.5 x 70mm screws contain?\u003c\/h4\u003e\u003cp\u003eThe box holds 100, each 4.5 x 70mm.\u003c\/p\u003e\u003ch4\u003eDo I need a pilot hole for 4.5 x 70mm performance screws?\u003c\/h4\u003e\u003cp\u003eNo. The manufacturer says they are self-drilling and need no pilot hole.\u003c\/p\u003e\u003ch4\u003eWhat does the thread do?\u003c\/h4\u003e\u003cp\u003eThe anti-friction thread prevents jacking, and it is partially serrated.\u003c\/p\u003e","brand":"Securfix","offers":[{"title":"Default Title","offer_id":67824125444369,"sku":"DS-8787305","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/7323\/0097\/files\/securfix-performance-screws-4-5-x-70mm-box-of-100-1.png?v=1792511498","url":"https:\/\/diysmith.co.uk\/products\/securfix-performance-screws-4-5-x-70mm-box-of-100","provider":"DIYSmith","version":"1.0","type":"link"}