{"product_id":"osg-1625078908-thread-forming-tap-7-8-9-unc-cobalt-ticn","title":"Osg 1625078908 Thread Forming Tap 7\/8-9 Unc Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1625078908 is a thread forming tap designed for right-hand internal threading in a wide range of metallic workpiece materials. Part of the OSG EXOPRO XPF Series 16250, it features a 7\/8-9 UNC thread profile with a 3B class of fit and an H8 thread limit for tight dimensional control. Manufactured from cobalt high-speed steel and finished with a TiCN coating, the tap is built to handle demanding applications including stainless steel, titanium, high-nickel alloys, and hardened steel. The modified bottoming chamfer, with 2.5 to 3 chamfered threads, allows threading close to the bottom of a blind hole. Licensed HVAC, plumbing, electrical, or mechanical tradespeople working with precision threaded assemblies will encounter this tool in fabrication and maintenance settings.\u003c\/p\u003e\n\u003cp\u003eThe OSG 1625078908 is suited for both blind hole and through-hole threading operations across a broad material range. Rated for use in aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, high-nickel alloys, and titanium, it covers material application codes P, M, N, and H. With a tapping depth of 2.638 inches and a thread length of 1.11 inches, it accommodates typical structural and mechanical thread depths found in industrial and commercial fabrication. The modified bottoming chamfer makes it particularly effective in applications where full thread engagement near the base of a blind hole is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC thread profile with 3B class of fit and H8 thread limit for precise fitment\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction for heat and wear resistance in tough alloys\u003c\/li\u003e\n  \u003cli\u003eTiCN coating reduces friction and extends tool life across ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer (2.5-3 chamfered threads) enables threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eRated for aluminum, carbon steel, alloy steel, stainless steel, high-nickel alloy, and titanium\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design; suitable for conventional tapping setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole and through-hole threading applications in materials coded P, M, N, and H, including aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, high-nickel alloy, and titanium. Part of the OSG EXOPRO XPF Series 16250.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and operated by machinists or skilled tradespeople using a tapping machine, CNC machining center, or manual tap wrench rated for the required torque range. Before use, ensure the workpiece is securely fixtured and the correct pilot hole diameter for a 7\/8-9 UNC thread forming tap has been drilled. Thread forming taps displace material rather than cut chips, so adequate lubrication is critical, particularly in ferrous materials. Do not use this tap as a thread cutting tap; thread forming requires a larger pilot hole than cutting taps of the same thread size.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-9 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: H8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 9\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\u003eChamfered Threads\u003c\/strong\u003e: 2.5-3P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.11 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 2.638 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.5118 inches (140 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.697 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.523 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.75 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\u003eSeries\u003c\/strong\u003e: 16250 (EXOPRO XPF)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.605 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: 1625078908\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728109568306,"sku":"1625078908","price":513.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/97a1414e31a570fbb064964d71eb3551_d6d2d002-377e-416d-a0a0-59dc03207370.jpg?v=1788688129","url":"https:\/\/voomisupply.com\/products\/osg-1625078908-thread-forming-tap-7-8-9-unc-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}