{"product_id":"mankk-400pcs-metric-grade-10-9-flange-bolts-and-nuts-kit-engine","title":"mankk 400PCS Metric Grade 10.9 Flange Bolts and Nuts Kit - Engine","description":"\u003cp\u003eIn this review the mankk 400PCS metric flange bolt kit is evaluated as a practical, value-focused fastener assortment for mechanics and hobbyists. The kit's single biggest selling point is its material quality: the bolts are made from \u003cstrong\u003e10.9 grade alloy steel\u003c\/strong\u003e with a galvanized surface, which makes them suitable for demanding tasks including use inside engines where strength and corrosion resistance matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh grade material:\u003c\/strong\u003e 10.9 alloy steel construction delivers higher tensile strength than ordinary carbon bolts, useful for mechanical and automotive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanized finish:\u003c\/strong\u003e Zinc plated surface improves corrosion resistance for parts that may see moisture or under-hood exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo thread types:\u003c\/strong\u003e The kit includes both full thread and half thread flange bolts to meet different clamping and shear requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive assortment:\u003c\/strong\u003e 400 pieces across 17 metric sizes cover M6x1.0, M8x1.25, M10x1.5 with lengths from 12mm to 45mm, so common jobs are covered without extra purchases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrganized storage:\u003c\/strong\u003e A handheld plastic box with movable dividers and labeled compartments makes transport and sorting straightforward on the bench or in the shop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete fastener sets:\u003c\/strong\u003e The kit pairs 100 flange screws with 100 nuts, 100 washers and 100 elastic sheets, giving matched components for assembly and replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for automotive DIYers, professional mechanics who need a portable assortment for repairs, and small shops that frequently replace common metric flange bolts. The material choice and thread variety make it especially useful for under-hood work and mechanical equipment where stronger fasteners are required.\u003c\/p\u003e\n\u003cp\u003eIt is less well suited for specialty fastener needs that demand stainless steel, custom thread pitches, or hardened grades beyond 10.9. If corrosion resistance in marine environments or specific OEM-specified finishes are required, buyers should look for grade or coating alternatives.\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\u003eGood value for money with 400 matched pieces including nuts, washers and elastic sheets.\u003c\/li\u003e\n\u003cli\u003eStrong \u003cstrong\u003e10.9 grade alloy steel\u003c\/strong\u003e bolts provide higher tensile capacity than standard bolts.\u003c\/li\u003e\n\u003cli\u003eHandy plastic box with dividers and labeled compartments keeps sizes organized and portable.\u003c\/li\u003e\n\u003cli\u003eIncludes both full and half thread options for versatile assembly needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGalvanized finish improves corrosion resistance but is not a substitute for stainless steel in highly corrosive environments.\u003c\/li\u003e\n\u003cli\u003eAssortment focuses on common metric sizes; rare or specialty sizes are not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003emankk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePieces included\u003c\/td\u003e\n\u003ctd\u003e400 PCS (bolts, nuts, washers, elastic sheets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eGrade 10.9 alloy steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eGalvanized surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread types\u003c\/td\u003e\n\u003ctd\u003eFull thread and half thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric sizes\u003c\/td\u003e\n\u003ctd\u003eM6x1.0, M8x1.25, M10x1.5 (lengths 12mm to 45mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eHandheld plastic box with movable divider and labeled notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe mankk 400PCS metric flange bolt kit is a solid, cost-effective choice for automotive and mechanical repair where strong, reliable fasteners are required. With \u003cstrong\u003e10.9 grade alloy steel\u003c\/strong\u003e, both thread types, and an organized box of matched components, it offers excellent practical value for DIYers and small shops, while those needing stainless or specialty fasteners should consider alternate kits.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bolts suitable for engine use?\u003c\/strong\u003e\u003cbr\u003eYes, the \u003cstrong\u003e10.9 grade alloy steel\u003c\/strong\u003e construction and galvanized finish make them appropriate for many under-hood applications, though consult OEM specs for critical engine fasteners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sizes are included?\u003c\/strong\u003e\u003cbr\u003eThe kit covers metric flange bolts in M6x1.0, M8x1.25 and M10x1.5 across lengths from 12mm to 45mm across 17 sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the kit organized?\u003c\/strong\u003e\u003cbr\u003eBolts, nuts, washers and elastic sheets come in a handheld plastic box with movable dividers and classified notes for easy sorting and transport.\u003c\/p\u003e","brand":"mankk","offers":[{"title":"Default Title","offer_id":48192312508635,"sku":"B0DR26YHQ1","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81VT3oC7WnL._SL1500.jpg?v=1770232908","url":"https:\/\/gearmusthave.com\/products\/mankk-400pcs-metric-grade-10-9-flange-bolts-and-nuts-kit-engine","provider":"GearMustHave","version":"1.0","type":"link"}