{"product_id":"5-16-18-x-3ft-self-tapping-trailer-deck-screws-type-f-durable","title":"5\/16-18 x 3ft Self-Tapping Trailer Deck Screws, Type F - Durable","description":"\u003cp\u003eIn this review the focus is on a workhorse fastener for trailer decks and heavy-duty wood or thin metal projects: the 5\/16-18 x 3' self-tapping trailer deck screws with a Type F point. The bottom line is simple: these screws are for contractors, fabricators, and serious DIYers who need a reliable thread-cutting screw that installs cleanly and resists corrosion. The reviewer found they live up to the claim of cutting threads into both wood and plate steel while offering a strong, flush finish thanks to the flat countersunk head.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-tapping Type F point:\u003c\/strong\u003e Cuts threads into wood and thin metal without pre-tapping, which speeds installation on trailer floorboards and similar assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened steel construction:\u003c\/strong\u003e Provides toughness under high torque so screws are less likely to break when driven into dense materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack phosphate and oil coating:\u003c\/strong\u003e Offers surface corrosion resistance for use outdoors and in trailer environments where moisture and road grime are common.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStar drive T-40:\u003c\/strong\u003e Reduces cam-out and allows higher applied torque for a more secure fastening and fewer stripped heads during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat countersunk head:\u003c\/strong\u003e Creates a flush finish when installed correctly, improving appearance and preventing snags on deck surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThese screws are aimed at professionals and experienced DIYers working on trailer decks, flooring repairs, machinery bases, or applications where a thread-forming fastener saves time. They suit contractors and automotive workers who regularly fasten wood to metal or join floorboards to trailer frames.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users who require stainless steel for long-term marine exposure or applications that demand decorative finish options; this product is black phosphate coated, not stainless, and is optimized for strength and thread-forming performance rather than appearance alone.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReliable thread cutting into wood and thin plate steel, matching the advertised Type F performance.\u003c\/li\u003e\n\u003cli\u003eDurable hardened steel with black phosphate finish helps resist corrosion for exterior use.\u003c\/li\u003e\n\u003cli\u003eStar drive T-40 reduces slippage and makes installation faster and cleaner.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBlack phosphate is protective but not as corrosion-resistant as stainless steel for prolonged marine exposure.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e5\/16-18 x 3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint type\u003c\/td\u003e\n\u003ctd\u003eType F self-tapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead style\u003c\/td\u003e\n\u003ctd\u003eFlat countersunk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive\u003c\/td\u003e\n\u003ctd\u003eStar drive T-40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial \u0026amp; finish\u003c\/td\u003e\n\u003ctd\u003eHardened steel, black phosphate and oil coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e500 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eFor trailer deck work and other heavy fastening tasks where thread-forming ability and strength matter, these screws are a practical, cost-effective choice. They cut threads reliably, resist typical corrosion with their coating, and the star drive reduces installation problems, making them a good value for professionals and seasoned DIYers who prioritize performance over stainless appearance.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan these screws cut through thin steel plate?\u003c\/strong\u003e\u003cbr\u003eYes, the Type F point is designed to form threads in wood and thin plate steel; customers reported successful use with 1\/4 in plate in many cases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the black phosphate finish prevent rust?\u003c\/strong\u003e\u003cbr\u003eThe black phosphate and oil coating provide good surface corrosion resistance for trailers and outdoor use, but stainless steel is preferable for prolonged exposure to saltwater.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo these screws strip easily?\u003c\/strong\u003e\u003cbr\u003eThe star drive T-40 reduces cam-out and stripping; customers noted few instances of stripping when using the correct driver bit and technique.\u003c\/p\u003e","brand":"Newport Fasteners","offers":[{"title":"Default Title","offer_id":48677571985627,"sku":"B07D3NH4JJ","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/512ba3zVwYL._SL1000_5e6e1494-4926-40f8-83c8-9f6869e7f77d.jpg?v=1778631733","url":"https:\/\/gearmusthave.com\/products\/5-16-18-x-3ft-self-tapping-trailer-deck-screws-type-f-durable","provider":"GearMustHave","version":"1.0","type":"link"}