{"product_id":"balax-12863-010-thread-forming-tap-1-4-28-unf-bottoming-hss","title":"Balax 12863-010 Thread Forming Tap 1\/4-28 Unf Bottoming Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BALAX 12863-010 is a thread forming tap designed for producing internal threads in ductile materials without cutting. Sized for 1\/4-28 UNF threads with a Class 2 fit and H3 thread limit, this bottoming-style tap reaches close to the bottom of blind holes. Manufactured from high-speed steel with a bright uncoated finish, it delivers consistent thread geometry and dimensional accuracy in production and maintenance applications. The right-hand spiral geometry displaces material rather than removing chips, reducing the risk of chip-related thread damage in blind hole work.\u003c\/p\u003e\u003cp\u003eThis tap is intended for blind hole threading operations where full thread depth close to the hole bottom is required. The bottoming chamfer, with 2.5 threads of lead, allows threads to be formed nearly to the bottom of a drilled hole. It is suited for use in light metals, mild steels, and other ductile materials in industrial maintenance, manufacturing, and general machining environments. Machinists and toolmakers are the primary installers.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF thread size with Class 2 fit for standard tolerance threading\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer with 2.5P lead for threading close to blind hole bottoms\u003c\/li\u003e\n\u003cli\u003eH3 thread limit for consistent fit across production runs\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability in general machining applications\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for use with standard tapping oils and coolants\u003c\/li\u003e\n\u003cli\u003eSingle oil groove design supports lubrication flow during forming\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a thread forming tap for blind hole applications requiring 1\/4-28 UNF right-hand internal threads with a Class 2 fit in ductile workpiece materials.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps should be installed and driven by a qualified machinist using a properly sized tap wrench, tapping head, or CNC spindle set to the correct feed rate. Always apply an appropriate tapping fluid or cutting oil to the tap and workpiece before use. Ensure the drilled hole diameter matches the recommended forming tap drill size for 1\/4-28 UNF to achieve the correct thread percentage. Do not use this tap on brittle materials such as cast iron, as thread forming requires material ductility.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eClass of Fit\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2.5P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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: 0.79 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.0 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\u003eOil Grooves\u003c\/strong\u003e: 1\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\u003eSeries\u003c\/strong\u003e: BXB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: BALAX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 12863-010\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BALAX","offers":[{"title":"Default Title","offer_id":51971412066610,"sku":"12863-010","price":38.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/be221c3884acd63687ea66b2ec830dcc.jpg?v=1789957040","url":"https:\/\/voomisupply.com\/products\/balax-12863-010-thread-forming-tap-1-4-28-unf-bottoming-hss","provider":"Voomi Supply","version":"1.0","type":"link"}