{"product_id":"osg-1625538627-thread-forming-tap-3-8-16-unc-cobalt","title":"Osg 1625538627 Thread Forming Tap 3\/8-16 Unc Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1625538627 is a thread forming tap designed for right-hand internal threading in a wide range of metals. Unlike cutting taps, thread forming taps cold-form the thread profile by displacing material rather than cutting it, producing stronger threads with no chips to clear. This tap covers the 3\/8-16 UNC thread size to a 2B class of fit and features a semi-bottoming chamfer for threading close to the bottom of blind holes. Manufactured from cobalt high-speed steel and finished with a V coating, it is built to handle demanding materials including stainless steel, titanium, high-nickel alloys, and hardened steel. Overall length is 5.9055 inches with a thread length of 0.6260 inches.\u003c\/p\u003e\u003cp\u003eThis tap is suited for production and maintenance applications across machining, fabrication, and general metalworking environments. The H7 thread limit and 2B class of fit make it appropriate for standard-tolerance fastener applications. Material application data covers aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, high-nickel alloy, and titanium, giving it broad utility in both job shop and production floor settings. It is installed by machinists and toolroom technicians using a tapping machine, CNC machining center, or manual tap wrench.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design displaces material rather than cutting, producing chip-free threads and improved thread strength\u003c\/li\u003e\n\u003cli\u003eSemi-bottoming chamfer allows threading to within a few pitches of blind hole bottom\u003c\/li\u003e\n\u003cli\u003eCobalt HSS construction provides heat and wear resistance for hard and abrasive workpiece materials\u003c\/li\u003e\n\u003cli\u003eV coating reduces friction and improves tool life in difficult-to-machine alloys\u003c\/li\u003e\n\u003cli\u003eH7 thread limit and 2B class of fit for standard-tolerance UNC threaded assemblies\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction compatible with standard tapping equipment and fixturing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in 3\/8-16 UNC tapping applications across aluminum, cast aluminum, carbon steel, alloy steel, die steel, stainless steel, high-nickel alloy, and titanium workpieces. Fits standard tap holders sized for a 0.3810-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require a properly sized forming tap drill hole, which is larger than the equivalent cutting tap drill size — consult published forming tap drill charts for the correct diameter before drilling. Secure the workpiece and ensure the tapping spindle is aligned perpendicular to the hole to prevent tap breakage. Use a lubricant or cutting fluid appropriate for the workpiece material; sulfurized or chlorinated cutting oils are typical for steel, while aluminum-specific fluids are preferred for aluminum alloys. This tap is intended for use by qualified machinists or toolroom personnel familiar with thread forming processes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\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: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 16\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: Semi-Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.9055 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.6260 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.5748 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3810 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.2860 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\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 16255\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.179 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: 1625538627\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51731217219890,"sku":"1625538627","price":192.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3299a5522130241ca27ef656891389e6_ec3a79c0-e858-4921-87c9-bdee89b2874d.jpg?v=1788728444","url":"https:\/\/voomisupply.com\/products\/osg-1625538627-thread-forming-tap-3-8-16-unc-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}