{"product_id":"osg-1137600-straight-flute-plug-tap-1-1-4-7-unc-hss","title":"Osg 1137600 Straight Flute Plug Tap 1-1\/4-7 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1137600 is a straight flute plug tap designed for cutting 1-1\/4-7 UNC internal threads in a range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread form across production and maintenance applications. It features 4 flutes, a plug chamfer for general-purpose through-hole and blind-hole threading, and an H4 thread limit for a 3B class of fit. With an overall length of 5-3\/4 inches and a thread length of 2-9\/16 inches, it fits standard tap holders and machine spindles used by machinists and maintenance technicians.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading operations in job shops, manufacturing facilities, and industrial maintenance environments. It handles aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The plug chamfer style makes it the standard choice when starting a tap in a pre-drilled hole where the thread does not need to be cut to the very bottom. It is appropriate for both hand tapping and machine tapping setups where a straight-flute tool is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread size 1-1\/4-7 UNC with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003e4 straight flutes with plug chamfer for general-purpose through-hole and blind-hole use\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across carbon and alloy steel applications\u003c\/li\u003e\n\u003cli\u003eH4 thread limit ensures consistent 3B class of fit tolerances\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with cutting fluids across a broad material range\u003c\/li\u003e\n\u003cli\u003eNo coolant-through feature — compatible with flood or brush-applied cutting fluid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Fits standard tap holders sized for a 1.21-inch shank diameter. Compatible with both hand tapping and CNC or manual machine tapping operations calling for a straight-flute plug tap in 1-1\/4-7 UNC.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or qualified maintenance technician should perform tapping operations. Ensure the workpiece is securely fixtured and the tap is properly aligned with the pre-drilled pilot hole before starting. Apply an appropriate cutting fluid for the material being tapped to extend tool life and improve thread finish. Do not force a tap that has stalled — back it out to clear chips before continuing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/4-7 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: 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\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: 2-9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.21 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.766 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 3 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: 101\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\u003eWeight\u003c\/strong\u003e: 1.13 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: 1137600\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730981880114,"sku":"1137600","price":344.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a7a84dcce5d56b53e61c4114671dba37.jpg?v=1788725527","url":"https:\/\/voomisupply.com\/products\/osg-1137600-straight-flute-plug-tap-1-1-4-7-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}