{"product_id":"osg-1121608-straight-flute-tap-3-8-24-unf-ticn-hss","title":"Osg 1121608 Straight Flute Tap 3\/8-24 Unf Ticn Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1121608 is a straight flute tap designed to cut 3\/8-24 UNF internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a TiCN (titanium carbonitride) coating, it delivers improved wear resistance and reduced friction compared to uncoated taps. The plug chamfer  -  with a lead of approximately 3 to 5 threads  -  makes this tap suited for through-hole applications where the tap can advance freely. With 4 flutes and an H3 thread limit, it produces a Class 3B fit, the standard tolerance class for precision fastener assemblies. Machinists, toolmakers, and maintenance technicians install this tap by hand or in a tapping head.\u003c\/p\u003e\n\u003cp\u003eThe OSG 1121608 is used in production and job-shop environments for tapping 3\/8-24 UNF through holes in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The 3\/8-24 UNF thread is common in hydraulic fittings, instrument mounting hardware, and precision mechanical assemblies where finer thread pitch is required over the coarser UNC standard. The plug chamfer suits through-hole work in both manual tapping and machine tapping operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-24 UNF thread form, Class 3B fit with H3 thread limit for precision tolerance control\u003c\/li\u003e\n  \u003cli\u003eTiCN coating increases surface hardness and extends tool life in abrasive and harder steel materials\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer (3-5 thread lead) designed for through-hole tapping applications\u003c\/li\u003e\n  \u003cli\u003e4 straight flutes provide chip clearance in short-chipping materials such as cast iron and aluminum\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, compatible with standard tapping equipment\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through feature; suitable for flood coolant or cutting fluid applied externally\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Designed as an OEM-style replacement or direct substitute tap for 3\/8-24 UNF plug-chamfer hand and machine tapping applications using standard tap holders and chucks.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a tap wrench, tapping head, or CNC tapping attachment rated for the shank diameter. Always apply cutting fluid or tapping compound appropriate to the workpiece material before starting the tap. Ensure the tap is properly aligned perpendicular to the workpiece surface to avoid bell-mouthing or tap breakage. For machine tapping, use a floating tap holder to compensate for minor axial misalignment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-24 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: 24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/4 inches (0.937 inches decimal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2-15\/16 inches (2.937 inches decimal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 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\u003eSquare Size\u003c\/strong\u003e: 0.286 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.4134 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\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: 101\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.075 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel\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: 1121608\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744138428722,"sku":"1121608","price":38.92,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/326d7ab8b02d8071a42bd324ef4f1ff7_48ef2a03-3336-4d05-b6ce-60ef616715ad.jpg?v=1788854637","url":"https:\/\/voomisupply.com\/products\/osg-1121608-straight-flute-tap-3-8-24-unf-ticn-hss","provider":"Voomi Supply","version":"1.0","type":"link"}