{"product_id":"osg-1172000-straight-flute-bottoming-tap-7-16-14-unc","title":"Osg 1172000 Straight Flute Bottoming Tap 7\/16-14 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1172000 is a straight flute bottoming tap designed to cut right-hand internal threads in through-holes and blind holes where threads must extend close to the bottom. Built from high-speed steel with a bright, uncoated finish, it cuts a 7\/16-14 UNC thread form with three flutes and an H3 thread limit tolerance. Overall length is 3-5\/32 inches with a thread length of 1-7\/16 inches and a shank diameter of 0.323 inches. Machinists, toolroom technicians, and maintenance mechanics use this tap in manual tap handles, CNC tapping heads, and drill press setups wherever a clean bottoming thread is required.\u003c\/p\u003e\u003cp\u003eThis tap is suited for general metalworking and maintenance applications in both production and job-shop environments. The bottoming chamfer allows thread engagement very close to the bottom of a blind hole, making it the correct choice when a plug or taper tap has already started the thread and full depth is needed. It performs in a range of workpiece materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer allows threading to near the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides durability across ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eH3 thread limit tolerance suits standard fit classes for UNC threads\u003c\/li\u003e\n\u003cli\u003eThree straight flutes support chip clearance in shorter-chipping materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish maintains as-ground cutting geometry without added coating thickness\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction compatible with standard tapping equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard tap handles, tap wrenches, and machine tapping heads accepting a straight-shank tap with a 0.323-inch shank diameter. Compatible with workpiece materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel per OSG Series 103 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed and operated by qualified machinists or toolroom technicians familiar with tapping procedures. Always ensure the workpiece is securely clamped and properly aligned before starting the tap to prevent breakage. Apply cutting fluid appropriate to the workpiece material to extend tool life and improve thread finish. When tapping blind holes, use a plug or taper tap first to establish the thread, then follow with this bottoming tap to extend threads to full depth.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-14 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: 14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/32 inches (3.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-7\/16 inches (1.071 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.323 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.406 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.242 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.689 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.076 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1172000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51742901666098,"sku":"1172000","price":42.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/796bb67b2d00e02857e2a964f934ec77.jpg?v=1788840412","url":"https:\/\/voomisupply.com\/products\/osg-1172000-straight-flute-bottoming-tap-7-16-14-unc","provider":"Voomi Supply","version":"1.0","type":"link"}