{"product_id":"osg-1430905-spiral-flute-tap-3-8-16-unc-bottoming-tin","title":"Osg 1430905 Spiral Flute Tap 3\/8-16 Unc Bottoming Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1430905 is a spiral flute bottoming tap designed for cutting 3\/8-16 UNC internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel with a TiN (titanium nitride) coating, it delivers improved wear resistance and reduced friction compared to uncoated tooling. The bottoming chamfer allows threading close to the bottom of blind holes where plug or taper taps cannot reach. With a 50-degree helix angle and right-hand flute direction, the spiral geometry efficiently evacuates chips upward out of the hole during the tapping cycle. This tap is suited for machine tapping operations in production and job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThe 1430905 is rated for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Its 3B class of fit and H3 thread limit produce threads within standard tolerance for general mechanical assembly. With an overall length of 2-15\/16 inches and a thread length of approximately 1-1\/4 inches, it fits standard tap holders and floating collet chucks used on CNC machining centers, drill presses, and tapping machines. It is sold individually and is well suited for maintenance shops, production lines, and toolroom use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBottoming chamfer for threading to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003e50-degree helix angle promotes upward chip evacuation in through and blind hole applications\u003c\/li\u003e\n  \u003cli\u003eTiN coating extends tool life and reduces built-up edge in steel and aluminum\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 3B class of fit meet standard tolerance requirements for general assembly\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides toughness across a broad range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread and right-hand flute direction for conventional tapping operations\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. Compatible with standard 3\/8-16 UNC tap holders, tapping chucks, and floating collet systems. Fits OSG Series 107 tooling family.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachinist or toolroom personnel should install this tap in a properly aligned tap holder or floating chuck to avoid side-loading that can lead to tap breakage. Power down and lock out the machine spindle before changing tooling. Use an appropriate cutting fluid for the workpiece material — sulfurized oil for steel, water-soluble coolant or light oil for aluminum. Do not exceed the recommended feed rate for the machine and holder in use; forced feeding in blind holes is a common cause of tap failure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 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: 16\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 Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\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\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.938 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.25 inches (0.771 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\u003eNeck Length\u003c\/strong\u003e: 1.251 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 107\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.075 pounds\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: 1430905\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728390553906,"sku":"1430905","price":63.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ba8bd5dc82ec1247811fff6b3f9f40ea.jpg?v=1788690830","url":"https:\/\/voomisupply.com\/products\/osg-1430905-spiral-flute-tap-3-8-16-unc-bottoming-tin","provider":"Voomi Supply","version":"1.0","type":"link"}