{"product_id":"osg-1115800-straight-flute-tap-7-8-14-unf-plug-hss","title":"Osg 1115800 Straight Flute Tap 7\/8-14 Unf Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1115800 is a straight flute plug tap designed for cutting right-hand internal threads to the 7\/8-14 UNF standard. Built from high-speed steel with a bright, uncoated finish, it is engineered for general-purpose tapping in a machine or hand-tap setup. The plug chamfer, typically 3 to 5 threads of lead, makes it the standard starting choice when threading through-holes or when a bottoming tap will follow. With 4 flutes and an H2 thread limit, it holds close dimensional tolerances, making it reliable for production threading operations performed by machinists and maintenance professionals.\u003c\/p\u003e\u003cp\u003eThis tap is suited for tapping applications in ferrous and non-ferrous materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It fits standard machine-tap holders and hand-tap wrenches sized for its 0.697-inch shank diameter. The 7\/8-14 UNF thread form is commonly found in hydraulic fittings, fastener repairs, and precision mechanical assemblies across industrial maintenance and manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7\/8-14 UNF right-hand thread form with H2 thread limit for controlled fit tolerance\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread engagement, suitable for through-holes and pre-bottoming passes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across a range of ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003e4 straight flutes for chip control in short-chipping materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish  -  no coating interference with base material dimensions\u003c\/li\u003e\n\u003cli\u003eNo coolant-through feature; suited for flood coolant or cutting fluid applied externally\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces requiring 7\/8-14 UNF internal threads. Part of OSG Series 101.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by licensed machinists or maintenance technicians using a standard tap wrench or machine-tap holder. Always secure the workpiece and ensure the tap is properly aligned before applying torque to prevent breakage. Apply an appropriate cutting fluid for the workpiece material before and during tapping. Inspect the tap for wear or chipping between uses, and never back-tap a broken tool without removing all debris first.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-14 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: 14\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: H2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-11\/16 inches (4.689 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 2-7\/32 inches (1.665 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.697 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.523 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck 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\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\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: 101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.45 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: 1115800\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744275628338,"sku":"1115800","price":139.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9ea1f6999bfda4779a8d62b43f2e26d9.jpg?v=1788855484","url":"https:\/\/voomisupply.com\/products\/osg-1115800-straight-flute-tap-7-8-14-unf-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}