{"product_id":"osg-1400126101-thread-forming-tap-1-4-20-unc-cobalt","title":"Osg 1400126101 Thread Forming Tap 1\/4-20 Unc Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400126101 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads in ductile metals without cutting chips. Built from cobalt high-speed steel with a steam oxide coating, this tap handles demanding threading applications where heat resistance and lubricity matter. It carries a 1\/4-20 UNC thread profile with a modified bottoming chamfer of 2 to 2.5 threads, allowing it to thread close to the bottom of blind holes. The H3 thread limit keeps tolerance consistent across production runs. Licensed trades and machining professionals use this tap in CNC tapping operations and manual drill press setups alike.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading in a range of ferrous and non-ferrous materials, including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The modified bottoming chamfer makes it the right choice when thread depth in a blind bore needs to start close to the bottom. It fits standard 1\/4-inch tap holders and collet-style tapping heads. Industrial machinists, tool-and-die makers, and maintenance technicians working on structural and mechanical assemblies are the primary users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design produces threads without chips, reducing tap breakage risk in blind holes\u003c\/li\u003e\n\u003cli\u003eCobalt high-speed steel construction provides elevated heat resistance compared to standard M2 HSS\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating improves lubricity and reduces galling when tapping stainless steel and alloy steel\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer with 2 to 2.5 chamfered threads for threading near the bottom of blind bores\u003c\/li\u003e\n\u003cli\u003eH3 thread limit ensures consistent fit across repeated use in production environments\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, compatible with standard tapping equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. Compatible with standard tap holders and collet-style tapping heads accepting a 0.255-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid appropriate for the workpiece material — dry tapping in steel is not recommended. Ensure the tap is aligned perpendicular to the workpiece surface before engagement to avoid cross-threading. Always confirm the correct tap drill size for thread forming, as the required hole diameter is larger than for cut taps of the same thread size. This tap does not produce chips but does displace material, so workpiece ductility must meet minimum requirements for the thread forming process.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 20\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 to 2.5P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\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: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.594 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.933 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: Steam Oxide\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Die Steel, Hardened Steel, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HY-PRO NRT (14001)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.033 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: 1400126101\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728127033650,"sku":"1400126101","price":32.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e0e37a0e9dc49252a498944f970bbe1f.jpg?v=1788688430","url":"https:\/\/voomisupply.com\/products\/osg-1400126101-thread-forming-tap-1-4-20-unc-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}