{"product_id":"3-8-in-x-6-1-2-in-black-carriage-bolt-kit-durable-exterior-fasteners","title":"3\/8 in x 6-1\/2 in Black Carriage Bolt Kit - Durable Exterior Fasteners","description":"\u003cp\u003eIn this review the reviewer found the 3\/8 in x 6-1\/2 in Black Carriage Bolt Kit best suited for homeowners and contractors who need heavy duty exterior fasteners that also look finished. The single biggest reason to buy is the five-layer ceramic Ruspert coating that offers claimed 2X rust resistance compared to galvanized hardware, which makes these bolts a sensible choice for decks, gazebos, pergolas and similar outdoor builds where corrosion resistance and a semi-flush aesthetic matter.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSize and fit:\u003c\/strong\u003e The 3\/8 in diameter and 6-1\/2 in length suit thick timbers and structural members where a long carriage bolt is needed for a secure hold.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Each pack includes 25 carriage bolts, 25 USS thick washers and 25 hex nuts so projects can proceed without scavenging parts.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e The five-layer ceramic black Ruspert coating gives a smoother black finish and added corrosion protection for exterior exposure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade and strength:\u003c\/strong\u003e Grade 307A carriage bolts paired with grade 2 hex nuts deliver dependable fastening for heavy duty outdoor assemblies.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSemi-flush finish:\u003c\/strong\u003e The flat head design produces a semi-flush appearance that is visually neat for pavilions and tiny homes where appearance matters.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStandard tooling:\u003c\/strong\u003e The 9\/16 in wrench size for the nut makes installation easy with common hand tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe kit is aimed at DIYers, deck builders and small contractors installing outdoor structures who want a complete set of long carriage bolts with a black finished look and extra rust protection. It works well for projects like pergolas, gazebos, trailer fixtures and bolting down small structures such as a tiny home where both length and a finished head are needed.\u003c\/p\u003e\n\u003cp\u003eThose who need high corrosion resistance in extreme marine environments or require stainless steel fasteners for chemical exposure should look elsewhere; this kit is ceramic coated steel and while more resistant than galvanized hardware, it is not a stainless steel fastener.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eWell built, with customers noting good \u003cstrong\u003ebuild quality\u003c\/strong\u003e and a consistent finish.\u003c\/li\u003e\n \u003cli\u003eThe complete package of bolts, washers and nuts provides excellent \u003cstrong\u003evalue for money\u003c\/strong\u003e for multi-bolt projects.\u003c\/li\u003e\n \u003cli\u003eFlat head carriage bolts give a neat, semi-flush look suitable for visible outdoor work.\u003c\/li\u003e\n \u003cli\u003eCeramic Ruspert coating offers improved rust resistance versus standard galvanized bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eRust resistance received mixed feedback from some customers, so performance may vary with harsh exposure.\u003c\/li\u003e\n \u003cli\u003eNot stainless steel, so it may not be the optimal choice for saltwater or chemical environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e6-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eHead diameter\u003c\/td\u003e\n\u003ctd\u003e0.813 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNut wrench size\u003c\/td\u003e\n\u003ctd\u003e9\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWasher outside diameter\u003c\/td\u003e\n\u003ctd\u003e1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e25 carriage bolts, 25 USS thick washers, 25 hex nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCoating and grade\u003c\/td\u003e\n\u003ctd\u003e5-Layer ceramic Ruspert coating, Grade 307A bolts, grade 2 nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor most outdoor woodworking and light structural projects this carriage bolt kit is a practical, cost effective choice because it pairs correct length and strength with a finished black look and enhanced ceramic corrosion protection. Buyers who want more than galvanized performance and a tidy semi-flush head will find it good value, while those with extreme marine exposure should consider stainless options.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bolts suitable for decking?\u003c\/strong\u003e\u003cbr\u003eYes, the 3\/8 in by 6-1\/2 in length and thick USS washers make them appropriate for decking and heavy timber connections where a long carriage bolt is needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much rust protection do they provide?\u003c\/strong\u003e\u003cbr\u003eThe five-layer ceramic Ruspert coating is marketed as offering about 2X the rust resistance of galvanized fasteners, but some customers report mixed results in very harsh conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat tools are needed to install them?\u003c\/strong\u003e\u003cbr\u003eYou need a 9\/16 in wrench for the nuts and common drill or driver tools to prepare holes; the kit includes the nuts and washers so no extra hardware is required.\u003c\/p\u003e","brand":"Makers Bolt","offers":[{"title":"Default Title","offer_id":48612034379995,"sku":"B0CSTCR3CW","price":43.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51_1IpyozJL._SL1500.jpg?v=1778389709","url":"https:\/\/gearmusthave.com\/products\/3-8-in-x-6-1-2-in-black-carriage-bolt-kit-durable-exterior-fasteners","provider":"GearMustHave","version":"1.0","type":"link"}