{"product_id":"starrett-51449-four-face-tool-steel-parallel-6x3-4x1-4-in","title":"Starrett 51449 Four Face Tool Steel Parallel 6x3\/4x1\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 51449 is a four-face precision parallel machined from a special grade of tool steel and sold as a matched pair. All four faces are accurately ground to close limits, giving machinists and tool-and-die professionals a reliable reference surface for setup work, inspection, and milling operations. The parallel measures 6 inches in length, 3\/4 inches in height, and 1\/4 inches in thickness. Squareness is held to 0.0005 inches per 1 inch, making these parallels suitable for close-tolerance work where consistent, repeatable setups are required.\u003c\/p\u003e\n\u003cp\u003eFour-face parallels are used in machine shops, tool rooms, and precision metalworking environments. They serve as spacers and support elements when setting up vises, fixtures, and surface plates. The matched-pair format ensures both pieces are ground to the same dimensions, which is essential when workpieces need to be supported at identical heights on both sides. Typical users include machinists, tool makers, and quality-control technicians working in job shops and production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAll four faces precision ground to close limits for consistent contact and reference accuracy\u003c\/li\u003e\n  \u003cli\u003eSquareness tolerance of 0.0005 inches per 1 inch\u003c\/li\u003e\n  \u003cli\u003eManufactured from a special grade of tool steel for hardness and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSold as a matched pair for symmetrical workholding and setup applications\u003c\/li\u003e\n  \u003cli\u003eCompact 1\/4-inch thickness fits narrow vise openings and tight fixture slots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style precision parallel suitable for use with standard machinist vises, surface plates, and milling machine fixtures in tool-room and production-shop applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eParallels are placed and removed by hand during machine setup; no power tools are required. Always clean contact surfaces and the vise or fixture bed before placing parallels to prevent debris from affecting height consistency. Store parallels in a protective case or on a padded surface to avoid nicks that could compromise ground faces. Inspection and setup work should follow applicable shop standards for gauge and reference-tool handling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Precision Ground Sides\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquareness\u003c\/strong\u003e: 0.0005 inches per 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Matched Pair\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 51449\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51543100391730,"sku":"51449","price":191.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ca611c3fbbed40e0adfa8d4327278cf0.jpg?v=1785915431","url":"https:\/\/voomisupply.com\/products\/starrett-51449-four-face-tool-steel-parallel-6x3-4x1-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}