{"product_id":"osg-1195402-straight-flute-tap-1-4-28-unf-plug-hss","title":"Osg 1195402 Straight Flute Tap 1\/4-28 Unf Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1195402 is a straight flute tap designed for cutting internal threads in a range of ferrous and non-ferrous metals. It produces a 1\/4-28 UNF right-hand thread to a 3B class of fit with an H3 thread limit, making it well suited for applications that require a standard tolerance fit. The tap features a plug chamfer, which distributes cutting load across several leading threads and works in both through-hole and moderately deep blind-hole applications. Constructed from high-speed steel, it delivers consistent performance across production and maintenance tapping operations. Overall length is 2.5 inches with a thread length of 1 inch.\u003c\/p\u003e\u003cp\u003eThis tap is used in general machining, maintenance, and fabrication environments where 1\/4-28 UNF threads are required. The plug chamfer style is the most common choice for through-hole tapping and is appropriate for a wide range of shop and field repair scenarios. Machinists, toolmakers, and maintenance technicians routinely use this tap on manual machines, CNC equipment, and hand tapping setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF thread form, right-hand, 3B class of fit\u003c\/li\u003e\n\u003cli\u003eH3 thread limit for standard tolerance control\u003c\/li\u003e\n\u003cli\u003ePlug chamfer distributes cutting load over multiple leading threads\u003c\/li\u003e\n\u003cli\u003e2 straight flutes for chip clearance in shorter blind and through-hole applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction suitable for a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement  -  compatible with flood or manual lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eRated for tapping aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Designed as a standard 1\/4-28 UNF plug tap replacement suitable for use in any setup requiring that thread form and a 3B class of fit.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by licensed machinists, toolmakers, or qualified maintenance technicians using a standard tap wrench, tapping head, or machine spindle. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Secure the workpiece fully before tapping and ensure the tap is started square to the hole to avoid tap breakage. Follow shop safety procedures and applicable standards when working with rotating tooling.\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\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: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, High-Carbon Steel, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 104\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: 1195402\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51742859755826,"sku":"1195402","price":27.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6f4874af2817158b4dff738ade6ef894.jpg?v=1788839915","url":"https:\/\/voomisupply.com\/products\/osg-1195402-straight-flute-tap-1-4-28-unf-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}