{"product_id":"osg-1625012287-thread-forming-tap-12-28-unf-cobalt-ticn","title":"Osg 1625012287 Thread Forming Tap 12-28 Unf Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1625012287 is a thread forming tap designed for producing 12-28 UNF internal threads without cutting chips, using a cold-forming process that displaces material rather than removing it. Built from cobalt high-speed steel with a TiCN coating, this tap delivers enhanced hardness and heat resistance for demanding threading applications. It features a modified bottoming chamfer with 2.5 to 3 chamfered threads, allowing it to thread close to the bottom of a blind hole. With an overall length of 3.15 inches (80 mm) and a thread length of 0.52 inches, it fits standard tapping chucks and tap holders used in machining and maintenance work. The H7 thread limit ensures consistent fit within the 2B class of fit tolerance range. This is an OSG EXOPRO XPF series tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for both blind hole and through-hole threading in a wide range of materials. It is rated for use in aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium. It is commonly used in machine shops, manufacturing facilities, and maintenance environments where precise, burr-free threads are required in ductile metals. Right-hand thread direction is standard. The tap reaches a maximum tapping depth of 1.12 inches, making it appropriate for moderate-depth blind hole work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCold-forming thread design produces threads without chips, reducing tap breakage risk in ductile materials\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction provides elevated heat and wear resistance compared to standard M2 HSS\u003c\/li\u003e\n  \u003cli\u003eTiCN coating improves surface hardness and lubricity for extended tool life\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer (2.5 to 3 threads) enables threading closer to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eH7 thread limit and 2B class of fit for consistent, reliable tolerance control\u003c\/li\u003e\n  \u003cli\u003eCompatible with both blind hole and through-hole threading applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in right-hand 12-28 UNF tapping applications across a broad range of ductile and ferrous workpiece materials, including aluminum, carbon steel, alloy steel, stainless steel, high-nickel alloy, and titanium. Suitable for use with standard tap holders and tapping chucks that accept a 0.22-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid appropriate to the workpiece material — consult the fluid manufacturer for material-specific recommendations. Ensure the workpiece is securely fixtured and the spindle is properly aligned before tapping to avoid tap breakage or thread distortion. Use the correct drill size for the thread form specified by UNF thread-forming drill charts, as forming taps require a larger pilot hole than cutting taps. This tap should be installed and operated by qualified machinists or maintenance technicians familiar with tapping operations and toolholder requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 12-28\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: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2.5 to 3 threads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.15 inches (80 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.52 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.165 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.28 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading, Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Hardened Steel, Carbon Steel, Alloy Steel, Die Steel, Stainless Steel, High-Nickel Alloy, Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 16250 (EXOPRO XPF)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: 1625012287\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51731602374962,"sku":"1625012287","price":114.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/97a1414e31a570fbb064964d71eb3551_c05f128d-0642-4851-8018-7d717c1154e6.jpg?v=1788733065","url":"https:\/\/voomisupply.com\/products\/osg-1625012287-thread-forming-tap-12-28-unf-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}