{"product_id":"osg-1161300-straight-flute-tap-3-8-16-unc-plug-hss","title":"Osg 1161300 Straight Flute Tap 3\/8-16 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1161300 is a straight flute plug tap designed for cutting internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel with a bright, uncoated finish, it produces 3\/8-16 UNC right-hand threads using 3 straight flutes. The plug chamfer  -  typically 3 to 5 threads  -  provides a balance between starting ease and thread engagement depth, making this tap suitable for through-hole applications. The H1 thread limit ensures close tolerance fits appropriate for standard fastener assemblies. With an overall length of 2-15\/16 inches and a thread length of 1-1\/4 inches, it fits standard tap wrench and machine tool setups used in job shop and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is suited for tapping 3\/8-16 UNC threads in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. It is a common choice for general machining, maintenance and repair operations, and production tapping where a straight-flute design is appropriate for short-chipping or chip-neutral materials. The straight flute geometry works best in materials that produce broken or powdery chips rather than long stringy chips.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-16 UNC thread form with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for balanced starting and thread engagement in through-hole applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eH1 thread limit for controlled tolerance fits in standard fastener assemblies\u003c\/li\u003e\n\u003cli\u003e3 straight flutes optimized for short-chipping materials including cast iron and aluminum\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement  -  compatible with standard hand or machine tapping setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard straight flute tap compatible with tap wrenches, tapping heads, and CNC or manual machine tool holders that accept straight-shank taps in the 3\/8-16 UNC size range. Material applications include aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel as specified by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by a machinist or maintenance technician using a tap wrench, tapping attachment, or machine tool spindle. Secure the workpiece fully before tapping and ensure the tap is started square to the hole to prevent thread distortion or tap breakage. Apply appropriate cutting fluid for the workpiece material  -  even with bright uncoated tooling, lubrication extends tool life. Follow standard shop practice and applicable safety guidelines when operating machine tools or manual tapping equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\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: H1\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: 2-15\/16 inches (2.937 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/4 inches (0.937 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 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\u003eNeck Length\u003c\/strong\u003e: 1.4134 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: 103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: 1161300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740476178738,"sku":"1161300","price":31.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c30802ccb0ec6d8d74db4449244597e4_73183595-fe83-411b-b438-356c7b9c08db.jpg?v=1788825256","url":"https:\/\/voomisupply.com\/products\/osg-1161300-straight-flute-tap-3-8-16-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}