{"product_id":"osg-1232605-spiral-point-tap-1-2-20-unf-tin-hss","title":"Osg 1232605 Spiral Point Tap 1\/2-20 Unf Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1232605 is a spiral point tap designed for cutting right-hand internal threads in a range of ferrous and non-ferrous materials. It produces a 1\/2-20 UNF thread form to a 3B class of fit and carries an H3 thread limit for consistent tolerance control. Manufactured from high-speed steel and finished with a titanium nitride (TiN) coating, the tap offers improved wear resistance and reduced friction during the threading operation. With three flutes and a plug chamfer, it is suited for through-hole tapping applications where chips are pushed forward ahead of the tap. Licensed machinists and toolroom technicians are the primary users of this tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for through-hole threading in production and job-shop environments. It handles a broad material range including low-carbon steel, medium-carbon steel, high-carbon steel, hardened steel, cast iron, aluminum, and cast aluminum. The plug chamfer requires several thread leads to engage before full-form threads are cut, making it appropriate for through holes with sufficient depth. It is not intended for blind-hole applications where a bottoming tap would be required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-20 UNF thread form with 3B class of fit for standard tolerance internal threading\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit provides controlled oversize for plating allowance or consistent fit\u003c\/li\u003e\n  \u003cli\u003eTiN coating increases surface hardness and extends tool life in abrasive materials\u003c\/li\u003e\n  \u003cli\u003eThree-flute spiral point design pushes chips forward, reducing clogging in through-hole applications\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with multi-lead entry eases thread start and reduces tap breakage risk\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through feature; external coolant or cutting fluid application applies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole tapping of 1\/2-20 UNF threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel workpieces. Compatible with standard tap holders and collet chucks sized for a 0.367-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and operated by machinists, toolroom technicians, or maintenance professionals using a drill press, CNC machining center, or hand tap wrench. Ensure the pilot hole is drilled to the correct tap drill diameter for 1\/2-20 UNF before threading. Apply appropriate cutting fluid or tapping compound for the workpiece material to reduce heat and extend tool life. Never force a tap; if resistance increases unexpectedly, back off and clear chips before continuing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\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: 0.941 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 105\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.116 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: 1232605\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728816898354,"sku":"1232605","price":55.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6f0356f32b925043619759a6abc5a787.jpg?v=1788696336","url":"https:\/\/voomisupply.com\/products\/osg-1232605-spiral-point-tap-1-2-20-unf-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}