{"product_id":"osg-0145308-spiral-flute-sti-tap-8-32-unc-hss","title":"Osg 0145308 Spiral Flute Sti Tap 8-32 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 0145308 is a spiral flute STI tap designed for cutting Screw Thread Insert threads in a variety of materials. It features a 3-flute, 45-degree right-hand helix configuration and a bottoming chamfer, making it suitable for threading holes close to the bottom of a blind bore. The tap is manufactured from high-speed steel with a V finish and conforms to 8-32 UNC thread standards at a 2B class of fit. The H3 thread limit ensures consistent tolerance control across production runs. Licensed machinists and maintenance technicians working on precision assemblies will find this tap appropriate for insert-thread applications where standard tapped holes require reinforcement.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for use in applications requiring STI thread forms, typically in aerospace, automotive, and general industrial maintenance where Screw Thread Inserts are installed to repair or strengthen threaded holes. The 8-32 UNC specification places it in common use for smaller fastener assemblies. With an overall length of 2.375 inches and a 15\/16-inch thread length, it is sized for use in standard hand tap handles or machine tapping fixtures. The bottoming chamfer allows threading to near the bottom of shallow blind holes where standard plug or taper chamfers cannot reach.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e8-32 UNC thread form at 2B class of fit for consistent STI thread production\u003c\/li\u003e\n  \u003cli\u003e45-degree right-hand helix promotes efficient chip evacuation in blind hole applications\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer allows threading close to the base of blind bores\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit supports controlled tolerance for insert-ready threads\u003c\/li\u003e\n  \u003cli\u003eSeries 302 designation identifies OSG standard STI tap product line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement spiral flute STI tap for standard 8-32 UNC insert-thread applications. No specific compatible model numbers or system families were identified in the available product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by machinists or maintenance technicians using a standard tap handle or tapping machine set to the appropriate speed and feed for the workpiece material. Ensure the workpiece is securely fixtured and the tap is properly aligned to the pre-drilled STI hole before engagement. Apply cutting fluid appropriate to the material being tapped to extend tool life and improve thread quality. Inspect the tap for wear or chipping before each use and replace if thread form quality degrades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 8-32 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\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: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.9375 inches (0.311 inches decimal)\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: V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 302\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 0145308\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51738505511218,"sku":"0145308","price":67.55,"currency_code":"USD","in_stock":true}],"url":"https:\/\/voomisupply.com\/products\/osg-0145308-spiral-flute-sti-tap-8-32-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}