{"product_id":"osg-1733401-spiral-flute-tap-1-2-13-unc-3b-vanadium-hss","title":"Osg 1733401 Spiral Flute Tap 1\/2-13 Unc 3B Vanadium Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1733401 is a spiral flute tap designed for threading 1\/2-13 UNC holes in ferrous materials. It is manufactured from vanadium high-speed steel and finished with a steam oxide coating that provides corrosion resistance and reduces galling during threading. The modified bottoming chamfer allows the tap to thread close to the bottom of a blind hole, making it well suited for applications where full thread depth near the bottom is required. The 45-degree helix angle helps evacuate chips efficiently, reducing the risk of chip packing. It carries a 3B class of fit and an H3 thread limit for reliable, standardized tolerance control. Machinists and toolroom technicians are the primary users of this tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for use in stainless steel, high-carbon steel, low-carbon steel, and medium-carbon steel. It is a right-hand tap with right-hand flutes, suitable for CNC machining centers, drill presses, and manual tapping operations. The modified bottoming chamfer makes it a practical choice for blind-hole work in general machining, maintenance, and fabrication environments. It belongs to OSG Series 303 and is sold individually.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eVanadium high-speed steel construction for wear resistance in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and galling during thread cutting\u003c\/li\u003e\n  \u003cli\u003e45-degree helix angle promotes upward chip evacuation in blind holes\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer allows threading close to the bottom of a blind hole\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit with 3B class of fit for consistent, standardized tolerance output\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread and right-hand flute direction for conventional tapping setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 1\/2-13 UNC threads in stainless steel, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces. Suitable for use in any tapping setup that accepts a standard shank tap with a 0.367 inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eTapping operations should be performed by a qualified machinist following shop safety procedures. Ensure the workpiece is securely fixtured and the spindle or tap driver is properly aligned before beginning the cut. Apply an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Do not reverse or back the tap out under power without confirming the machine setup supports synchronized reversing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel, High-Carbon Steel, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.614 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.367 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.933 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.275 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 303\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.102 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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1733401\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51739848048946,"sku":"1733401","price":86.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0cbb4130652f452680104200f9bc0016.jpg?v=1788819594","url":"https:\/\/voomisupply.com\/products\/osg-1733401-spiral-flute-tap-1-2-13-unc-3b-vanadium-hss","provider":"Voomi Supply","version":"1.0","type":"link"}