{"product_id":"osg-1625014286-thread-forming-tap-1-4-28-unf-cobalt-ticn","title":"Osg 1625014286 Thread Forming Tap 1\/4-28 Unf Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1625014286 is a thread forming tap designed for cold-forming internal threads in ductile metals without cutting or producing chips. Manufactured from cobalt high-speed steel and finished with a TiCN coating, this tap delivers extended tool life in demanding materials including stainless steel, titanium, high-nickel alloys, and hardened steels. It produces a 1\/4-28 UNF right-hand thread to a 2B class of fit with an H6 thread limit. The modified bottoming chamfer, with 2.5 to 3 chamfered threads, allows threading close to the bottom of blind holes. Overall length is 3.1496 inches (80 mm). This tap belongs to OSG EXOPRO XPF Series 16250 and is intended for use by machinists and tooling professionals in production or maintenance environments.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for blind-hole and through-hole threading applications across a broad range of materials: aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium. Its cold-forming action displaces material rather than cutting it, resulting in stronger thread forms with work-hardened surfaces. It is commonly used in CNC machining centers, manual mills, and tapping machines where chip management is a concern or where thread strength is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread size 1\/4-28 UNF, right-hand, 2B class of fit with H6 thread limit\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction for heat and wear resistance in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eTiCN coating reduces friction and extends tool life across a wide material range\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer (2.5 to 3 chamfered threads) for near-bottom blind hole threading\u003c\/li\u003e\n  \u003cli\u003eCold-forming operation eliminates chips and produces stronger, work-hardened threads\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 aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium workpieces (material application codes P, M, N, H). Suitable for blind-hole and through-hole threading operations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by machinists using a standard tap holder, tapping head, or CNC rigid tapping cycle. Before use, verify the pilot hole diameter matches the required thread forming drill size for 1\/4-28 UNF, as the correct hole size is critical for cold-forming taps and differs from cutting tap requirements. Use appropriate tapping fluid or cutting oil for the workpiece material to reduce tool stress and heat buildup. Do not use in materials that lack sufficient ductility, as brittle materials are not compatible with thread forming operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 28\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: H6\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.1496 inches (80 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5083 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.19 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.3125 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: EXOPRO XPF 16250\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.043 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: 1625014286\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51748688462130,"sku":"1625014286","price":114.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68e582a0a62dfdd907551092b090407f.jpg?v=1788896751","url":"https:\/\/voomisupply.com\/products\/osg-1625014286-thread-forming-tap-1-4-28-unf-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}