{"product_id":"metric-flange-bolt-and-nut-assortment-kit-320pcs-organized-high","title":"Metric Flange Bolt and Nut Assortment Kit 320pcs - Organized High","description":"\u003cp\u003eIn this review of the 320-piece metric flange bolt and nut assortment, the bottom line is simple: this kit is for technicians, mechanics, and DIYers who need a compact, well-organized selection of high-strength metric fasteners ready for equipment mounting and repairs. The reviewer found the combination of fully threaded Grade 10.9 carbon steel bolts, serrated flange nuts, and both flat and spring lock washers to be the single biggest reason to buy, because they deliver dependable holding power in vibration-prone and load-bearing applications while stored neatly in a reusable case.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull thread metric bolts:\u003c\/strong\u003e Includes M6, M8 and M10 sizes across nine length options so the kit covers common metric fastening needs without guessing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade 10.9 carbon steel:\u003c\/strong\u003e Hardened material provides higher tensile strength and improved torque performance for mechanical and structural tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerrated flange nuts:\u003c\/strong\u003e Built-in serrations increase grip and help resist loosening under vibration compared with plain nuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack oxide finish with light oil:\u003c\/strong\u003e Surface treatment helps protect parts in storage and makes the set compatible with additional anti-rust oiling for exposed use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat and spring lock washers:\u003c\/strong\u003e Included washers let the user tailor assemblies for clamping or anti-rotation protection in the same kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable plastic case with size chart:\u003c\/strong\u003e Pre-sorted compartments and a printed chart speed up part selection and keep the set portable for workshops or field service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit suits maintenance crews, garage mechanics, and hobbyists who frequently work on equipment mounting, frame assemblies, engine brackets, or other projects where metric flange bolts and locking nuts are required. The range of M6 and M8 lengths plus an M10 option covers most light- to medium-duty fastening tasks encountered in a typical workshop.\u003c\/p\u003e\n\u003cp\u003eThose who need stainless steel or specialized corrosion resistance for long-term outdoor marine exposure should look elsewhere, since this set uses black oxide carbon steel with light oil rather than stainless alloys. If you require long metric stud lengths beyond the supplied sizes, a custom fastener source may be preferable.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-strength Grade 10.9 bolts and serrated nuts provide secure clamping and good torque capacity.\u003c\/li\u003e\n\u003cli\u003eComprehensive assortment with washers and a clear storage case keeps parts organized and portable.\u003c\/li\u003e\n\u003cli\u003eBlack oxide plus factory oil gives reasonable protection in storage and accepts further anti-rust treatment for exposed use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot stainless steel, so long-term corrosion resistance in harsh outdoor or marine environments is limited unless additional coatings are applied.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit quantity\u003c\/td\u003e\n\u003ctd\u003e320 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt sizes\u003c\/td\u003e\n\u003ctd\u003eM6 x 1.0, M8 x 1.25, M10 x 1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt lengths\u003c\/td\u003e\n\u003ctd\u003eM6: 12,16,20,25,30mm; M8: 16,20,25,30mm; M10: 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial and grade\u003c\/td\u003e\n\u003ctd\u003eGrade 10.9 carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eBlack oxide with light factory oil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded hardware\u003c\/td\u003e\n\u003ctd\u003eFlange bolts, serrated flange nuts, flat washers, spring lock washers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eReusable plastic case with printed size chart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor professionals and hobbyists who need a ready-to-use metric flange bolt assortment, this 320-piece kit is a practical value: the Grade 10.9 carbon steel fasteners and serrated nuts deliver strong, vibration-resistant fastening, and the organized case speeds workflow. It is a smart choice when high tensile strength and on-hand variety matter, though those needing inherent stainless corrosion resistance should consider alternative alloys.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre the bolts fully threaded?\u003c\/strong\u003e\u003cbr\u003eYes, all bolts in the set are fully threaded to the lengths listed, which helps when matching nut placement on short assemblies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the kit suitable for outdoor use?\u003c\/strong\u003e\u003cbr\u003eThe black oxide finish and light oil protect parts in storage; for prolonged outdoor or marine exposure additional anti-rust treatment is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the case include a size chart?\u003c\/strong\u003e\u003cbr\u003eYes, the reusable plastic case includes a printed size chart to identify and sort parts quickly.\u003c\/p\u003e","brand":"Kingarcher","offers":[{"title":"Default Title","offer_id":48742226624731,"sku":"B0F2MQP5W2","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71P1fVxlEwL._SL1500.jpg?v=1779002166","url":"https:\/\/gearmusthave.com\/products\/metric-flange-bolt-and-nut-assortment-kit-320pcs-organized-high","provider":"GearMustHave","version":"1.0","type":"link"}