{"product_id":"6-x-3-1-8-x-3-1-2-in-cast-iron-v-block-set-matched-pair","title":"6 x 3-1\/8 x 3-1\/2 in Cast Iron V Block Set - Matched Pair","description":"\u003cp\u003eIn this review the 6 x 3-1\/8 x 3-1\/2 in Cast Iron V Block Set is evaluated for workshop use and basic layout work; it is a simple matched pair of cast V-blocks aimed at machinists, toolroom technicians and hobbyists who need stable support for cylindrical parts. The single biggest reason to consider these blocks is their combination of heavy cast construction and machined square faces, which provide a reliable, low-cost platform for holding round stock during marking, drilling or basic inspection tasks.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched pair:\u003c\/strong\u003e Supplied as two blocks so cylinders can be supported on both sides for stable setup during machining or measuring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined faces:\u003c\/strong\u003e Square and parallel surfaces are machined to standard specifications to ensure consistent seating and predictable alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh quality casting:\u003c\/strong\u003e Properly seasoned casting reduces the risk of distortion and gives a heavy, stable base for general shop work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV width and depth:\u003c\/strong\u003e A 3-1\/8 in V width and 2-1\/2 in depth hold a variety of round stock sizes without expensive fixturing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and weight:\u003c\/strong\u003e At 6 in length and about 13 lbs total weight, the set offers good mass for damping vibration and resisting movement under light loading.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis set is best for general machinists, maintenance technicians and hobbyists who need an affordable, solid support for turning, drilling or basic inspection of round parts. Its machined faces and matched pairing make it practical for layout work, quick setups and non-precision holding where mass and stability matter.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for high-precision gauge work or metrology labs that require certified, hardened or ground V-blocks. If absolute dimensional accuracy and certified calibration are required, look for hardened, ground blocks with calibration certificates instead.\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\u003eSolid cast construction and substantial weight give stable support for general shop tasks.\u003c\/li\u003e\n\u003cli\u003eMachined square and parallel faces provide predictable seating and alignment for routine setups.\u003c\/li\u003e\n\u003cli\u003eSold as a matched pair so parts can be supported on both sides without additional fixtures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot a precision gauge set; some users report mixed accuracy and occasional quality variation between pieces.\u003c\/li\u003e\n\u003cli\u003eCast iron construction can be brittle under severe shock or improper handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6 x 3-1\/8 x 3-1\/2 in Cast Iron V Block Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePair\u003c\/td\u003e\n\u003ctd\u003eSupplied in a matched pair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (A)\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eV width (B)\u003c\/td\u003e\n\u003ctd\u003e3-1\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight (C)\u003c\/td\u003e\n\u003ctd\u003e3-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth (D)\u003c\/td\u003e\n\u003ctd\u003e2-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 13 lbs (set)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 6 x 3-1\/8 x 3-1\/2 in cast iron V block set is a practical, cost-effective choice for workshop tasks that need stable support of round stock. It offers good value when machined faces and matched pairing are sufficient, but those needing precision metrology should choose hardened, certified alternatives. For general machinists and hobbyists it is a useful, heavy-duty workholding aid.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these V-blocks hardened or ground?\u003c\/strong\u003e\u003cbr\u003eNo, these are cast and machined to square and parallel; they are not indicated as hardened or ground precision gauge blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size stock will the V accept?\u003c\/strong\u003e\u003cbr\u003eThe V width is 3-1\/8 in with a depth of 2-1\/2 in, suitable for a wide range of small to medium cylindrical stock used in general shop work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they come as a matched set?\u003c\/strong\u003e\u003cbr\u003eYes, the product is supplied in a matched pair so two blocks can be used together for stable support.\u003c\/p\u003e","brand":"HHIP","offers":[{"title":"Default Title","offer_id":48225651294427,"sku":"B00N40XL86","price":90.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71TVq2gBI_L._SL1500.jpg?v=1770830450","url":"https:\/\/gearmusthave.com\/products\/6-x-3-1-8-x-3-1-2-in-cast-iron-v-block-set-matched-pair","provider":"GearMustHave","version":"1.0","type":"link"}