{"product_id":"osg-1681700-straight-flute-tap-3-4-20-unef-plug-hss","title":"Osg 1681700 Straight Flute Tap 3\/4-20 Unef Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1681700 is a straight flute plug tap designed for cutting 3\/4-20 UNEF right-hand internal threads in a range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap features 6 flutes and an H3 thread limit, making it well suited for producing accurate threads in through-hole and blind-hole applications where chip control is manageable. With an overall length of 4.25 inches and a thread length of 1.5 inches, it fits standard tap holders and machines used in production and maintenance environments. Licensed machinists, tool and die makers, and maintenance mechanics are the primary users of this tool.\u003c\/p\u003e\u003cp\u003eThis tap is used in general machining, metalworking, and maintenance, repair, and operations (MRO) applications. The plug chamfer style, with a moderate lead-in, makes it appropriate for starting threads in through holes or for following a taper tap in blind holes. It is suited for use in both manual tapping and machine tapping setups. This tap does not support coolant-through delivery, so external cutting fluid application is recommended when working with harder materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/4-20 UNEF thread form with H3 thread limit for consistent tolerance control\u003c\/li\u003e\n\u003cli\u003e6-flute design provides good thread finish and distributes cutting load across multiple edges\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides a moderate lead-in suitable for through holes and follow-up blind-hole tapping\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction offers durability across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish allows visual inspection of tool condition during use\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, standard for most general tapping applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eRated for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces. Fits standard tap holders sized for a 0.59-inch shank diameter and 0.442-inch square drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTapping should be performed by a qualified machinist or maintenance mechanic using a properly sized tap wrench, tapping head, or CNC tapping cycle. Always apply an appropriate cutting fluid for the workpiece material to reduce heat and extend tool life. Secure the workpiece firmly before beginning to prevent movement during thread cutting. Reverse the tap periodically to break chips when working in deeper holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/4-20 UNEF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNEF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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\u003eThread Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.59 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.442 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.6875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 2.22 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: 101N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.315 pounds\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\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: 1681700\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740146073906,"sku":"1681700","price":101.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/018b8c055687b541eae671916ce9d6d7.jpg?v=1788822877","url":"https:\/\/voomisupply.com\/products\/osg-1681700-straight-flute-tap-3-4-20-unef-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}