{"product_id":"osg-1013900-straight-flute-tap-6-40-unf-hss-taper","title":"Osg 1013900 Straight Flute Tap 6-40 Unf Hss Taper","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1013900 is a straight flute tap designed to cut internal 6-40 UNF threads in a wide range of metallic workpiece materials. Manufactured from high-speed steel with a bright, uncoated finish, this taper chamfer tap is suited for hand tapping and machine tapping operations where chip evacuation is manageable in through-hole or open setups. It carries a Class of Fit of 2B and 3B with a Thread Limit of H2, providing the dimensional control required for standard UNF fastener applications. The 3-flute geometry, right-hand thread direction, and taper chamfer make entry and thread alignment straightforward in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is intended for use in ferrous and non-ferrous materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is well suited to light manufacturing, toolroom work, and field maintenance applications where 6-40 UNF threaded holes are required. The taper chamfer configuration makes it particularly effective as a starter tap when threading by hand or when initiating threads in a drill press or tapping head setup. Licensed machinists, tool and die technicians, and maintenance mechanics are the primary installers.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e6-40 UNF thread form with right-hand thread direction and H2 thread limit for controlled dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eTaper chamfer distributes cutting load over multiple leading threads for easier entry and reduced breakage risk\u003c\/li\u003e\n\u003cli\u003e3-flute straight flute design is effective in through-hole applications across a broad range of materials\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides toughness and resistance to wear in general-purpose tapping applications\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish is compatible with standard cutting fluids and tapping compounds\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement simplifies use in manual and standard machine setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose OEM-style straight flute tap for cutting 6-40 UNF internal threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces. Part of OSG Series 102.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eAlways secure the workpiece firmly and use a proper tapping fluid or cutting compound appropriate to the workpiece material before beginning thread cutting. Power down any machine tool and confirm zero motion before mounting or removing taps from chucks or holders. When hand tapping, use a calibrated tap wrench and back off the tap periodically to break chips and reduce the risk of tap breakage. Inspect the tap for chipping or wear before each use and replace if cutting edges show signs of degradation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 6-40\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: 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B, 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 11\/16 inches (0.4646 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.11 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.7992 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, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 102\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: 1013900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743006982450,"sku":"1013900","price":18.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6889bd6dc1dbf93058589fa703da2514.jpg?v=1788841489","url":"https:\/\/voomisupply.com\/products\/osg-1013900-straight-flute-tap-6-40-unf-hss-taper","provider":"Voomi Supply","version":"1.0","type":"link"}