{"product_id":"osg-1296200-spiral-flute-extension-tap-6-32-unc-h3","title":"Osg 1296200 Spiral Flute Extension Tap 6-32 Unc H3","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1296200 is a spiral flute extension tap designed for threading 6-32 UNC holes in a range of common metals. Built from high-speed steel with a bright, uncoated finish, this tap runs a 50-degree helix angle and a plug chamfer to ease thread starting. It carries an H3 thread limit and a 2B class of fit, making it suitable for standard unified thread tolerance requirements. With an overall length of 4 inches and a reduced shank design, it reaches into deeper or recessed features that standard-length taps cannot access. Machinists and tool-and-die professionals are the primary users of this tool.\u003c\/p\u003e\u003cp\u003eThis tap is suited for production and maintenance threading operations in aluminum, carbon steel, and cast iron. The spiral flute geometry evacuates chips upward, keeping the cutting zone clear during blind-hole threading. The extended 4-inch overall length makes it a practical choice when tooling must reach past fixtures, adapters, or deep-set bosses in a workpiece. Right-hand thread direction and right-hand flute direction follow standard convention for general-purpose tapping setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpiral flute design with 50-degree helix angle for efficient chip evacuation in blind holes\u003c\/li\u003e\n\u003cli\u003eH3 thread limit with 2B class of fit for standard unified thread tolerances\u003c\/li\u003e\n\u003cli\u003e4-inch overall length with reduced shank for extended reach applications\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for controlled thread starting\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction rated for aluminum, carbon steel, and cast iron\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with standard cutting fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for threading 6-32 UNC right-hand threads in aluminum, carbon steel, and cast iron workpieces. Fits standard tap holders and tapping heads accepting a 0.141-inch shank diameter with a 0.11-inch square drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTapping operations should be performed by a qualified machinist following shop safety procedures. Ensure the workpiece is secured and the tap is properly aligned with the drilled pilot hole before applying torque. Use an appropriate cutting fluid for the material being tapped to extend tool life and improve thread finish. Do not force a tap that has stopped turning freely, as high-speed steel is brittle and susceptible to breakage under excessive lateral load.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 6-32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 11\/16 inches (0.397 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.11 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.685 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Shank\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Carbon Steel, Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright, Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 918\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1296200\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51742913560882,"sku":"1296200","price":99.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/33f0dc21230a3796699835a99edc0b9e.jpg?v=1788840476","url":"https:\/\/voomisupply.com\/products\/osg-1296200-spiral-flute-extension-tap-6-32-unc-h3","provider":"Voomi Supply","version":"1.0","type":"link"}