{"product_id":"osg-1682300-straight-flute-tap-15-16-20-unef-plug-hss","title":"Osg 1682300 Straight Flute Tap 15\/16-20 Unef Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1682300 is a straight flute plug tap designed for cutting right-hand internal threads to the 15\/16-20 UNEF thread standard. Built from high-speed steel with a bright\/uncoated finish, it features 6 flutes and a plug chamfer entry, making it well suited for through-hole tapping applications where chip evacuation in shorter, segmented passes is manageable. The H3 thread limit designation indicates a ground-thread tolerance class appropriate for standard fit threaded assemblies. Overall length is 4-29\/32 inches with a thread length of 2-7\/32 inches and a shank diameter of 0.76 inches.\u003c\/p\u003e\u003cp\u003eThis tap is intended for use in machine shop, maintenance, and production environments where fine unified thread forms are required. The 15\/16-20 UNEF designation is common in precision mechanical assemblies, instrumentation, and hydraulic fittings. Material application data indicates suitability for aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is sized and configured for use in CNC machining centers, turret lathes, or manual tapping setups with a rigid or floating tap holder.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e15\/16-20 UNEF right-hand thread form with H3 ground-thread tolerance\u003c\/li\u003e\n\u003cli\u003e6-flute design supports stable cutting action in a range of ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread engagement  -  suitable for through-hole and sufficiently deep blind-hole applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction offers toughness and resharpening capability\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish  -  no coating buildup affecting thread tolerance\u003c\/li\u003e\n\u003cli\u003eSeries 101N  -  OSG standard production tap series\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for tapping 15\/16-20 UNEF threaded holes in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces. Coolant-through capability is not available on this tap.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or tooling technician familiar with tapping feeds, speeds, and cutting fluid selection for the workpiece material. Secure the tap in a rigid holder or floating tap holder sized for the 0.76-inch shank diameter before operation. Power down or disengage the spindle before loading or removing the tap. Do not force the tap against the bottom of a blind hole without accounting for the plug chamfer thread lead length.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 15\/16-20 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\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\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\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\u003eOverall Length\u003c\/strong\u003e: 4-29\/32 inches (4.906 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 2-7\/32 inches (1.5 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.76 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: 0.57 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel\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: 0.585 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: 1682300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743000887602,"sku":"1682300","price":171.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d901f8feef9846c67cf78289850deb82.jpg?v=1788841416","url":"https:\/\/voomisupply.com\/products\/osg-1682300-straight-flute-tap-15-16-20-unef-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}