{"product_id":"vigrue-521pcs-metric-flange-bolts-kit-m6-m8-m10-handy-assortment","title":"VIGRUE 521PCS Metric Flange Bolts Kit M6 M8 M10 - Handy Assortment","description":"\u003cp\u003eIn this review of the VIGRUE 521PCS flange bolts assortment, the bottom line is straightforward: this kit is for DIYers, mechanics, and small shops who need a ready set of metric serrated flange bolts, matching flange nuts and washers for automotive and general fastening tasks. The single biggest reason to buy is the matched, organized selection of 169 serrated flange bolts with 176 flange nuts and 176 flat washers in a compact, protected case, which saves time hunting for the right size when repairing or replacing fasteners.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive kit:\u003c\/strong\u003e The 521PCS set contains bolts, nuts and washers in matching counts so you can complete assemblies without hunting for loose parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide size range:\u003c\/strong\u003e Includes 16 common metric sizes across M6, M8 and M10, giving options for light automotive work and household repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerrated flange design:\u003c\/strong\u003e Serrated flanges bite into mating surfaces to reduce loosening from vibration, useful on engine and chassis fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial strength:\u003c\/strong\u003e Made from grade 8.8 alloy steel for higher hardness and improved corrosion and chemical resistance compared with plain mild steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart and fully threaded options:\u003c\/strong\u003e The mix of partial and full thread bolts covers applications needing shear strength or long engagement length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective packaging:\u003c\/strong\u003e Triple protection with a thickened case plus foam and kraft paper reduces the chance of damaged or mixed parts in transit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis set is aimed at home mechanics, hobbyists and small workshops that work on cars, motorcycles and machinery where metric fasteners are required. The inclusion of M6, M8 and M10 sizes and matched nuts and washers makes it particularly useful for routine maintenance and replacing stripped or lost bolts.\u003c\/p\u003e\n\u003cp\u003ePeople who need specialty or very high grade fasteners for critical structural or aerospace applications should look elsewhere; this kit is a practical, economical assortment rather than a certified fastener pack for regulated industries.\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 matched bolt, nut and washer counts mean fewer trips to the hardware store when completing assemblies.\u003c\/li\u003e\n\u003cli\u003eSerrated flange heads provide better resistance to loosening in vibrating environments.\u003c\/li\u003e\n\u003cli\u003eGrade 8.8 alloy steel construction offers good hardness and corrosion resistance for general 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 intended as a replacement for application-specific certified fasteners; buyers needing traceable or specialty coatings may require other sources.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit quantity\u003c\/td\u003e\n\u003ctd\u003e521 pieces (169 bolts, 176 nuts, 176 washers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt sizes included\u003c\/td\u003e\n\u003ctd\u003eM6, M8, M10 across 16 length variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRepresentative bolt lengths\u003c\/td\u003e\n\u003ctd\u003eM6 x 12\/16\/20\/25\/30mm; M8 x 16\/20\/25\/30\/35\/40mm; M10 x 20\/25\/30\/35\/40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolt standard\u003c\/td\u003e\n\u003ctd\u003eMetric flanged hex bolts (DIN6921 style), serrated flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial grade\u003c\/td\u003e\n\u003ctd\u003eAlloy steel grade 8.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread types\u003c\/td\u003e\n\u003ctd\u003ePartially and fully threaded bolts included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eThickened case with foam and kraft paper protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe VIGRUE 521PCS metric flange bolts kit is a practical, value-packed assortment for anyone who regularly works on metric fastenings and wants matched bolts, nuts and washers at hand. It combines useful size coverage, serrated flange heads for anti-loosening and grade 8.8 strength in an organized, protective case, making it a sensible purchase for DIY repairs and light workshop use.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre the bolts and nuts matched for size?\u003c\/strong\u003e\u003cbr\u003eYes, the kit includes matched counts of serrated flange bolts with corresponding flange nuts and flat washers to complete assemblies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat material and strength are the fasteners?\u003c\/strong\u003e\u003cbr\u003eThe components are made from alloy steel rated at grade 8.8, offering higher hardness and improved corrosion resistance for general use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the set suitable for automotive repairs?\u003c\/strong\u003e\u003cbr\u003eYes, customers report it is useful for replacing stripped or lost automotive bolts and for common Honda repairs, though it is not a substitute for application-certified fasteners.\u003c\/p\u003e","brand":"VIGRUE","offers":[{"title":"Default Title","offer_id":48608512999643,"sku":"B0CCRSQT4V","price":59.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81tQFdXjagL._SL1500.jpg?v=1778370332","url":"https:\/\/gearmusthave.com\/products\/vigrue-521pcs-metric-flange-bolts-kit-m6-m8-m10-handy-assortment","provider":"GearMustHave","version":"1.0","type":"link"}