{"product_id":"osg-1170700-straight-flute-tap-5-16-18-unc-plug-hss","title":"Osg 1170700 Straight Flute Tap 5\/16-18 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1170700 is a straight flute plug tap designed to cut 5\/16-18 UNC internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a bright\/uncoated finish, it delivers consistent thread quality in general-purpose tapping applications. The plug chamfer  -  typically 3 to 5 threads  -  allows the tap to start easily in through-holes and blind holes with adequate clearance. With an H3 thread limit and a 3B class of fit, it produces threads within standard tolerance for most industrial and mechanical assembly applications. Three flutes provide chip clearance and help maintain cutting performance through the full thread length.\u003c\/p\u003e\u003cp\u003eThis tap is suited for hand tapping and machine tapping operations in job shop, maintenance, and production environments. It performs in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The right-hand thread orientation makes it compatible with standard tapping heads and CNC tapping cycles. It is a practical choice for machinists, maintenance mechanics, and tooling professionals working with 5\/16-18 UNC fastener applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread form with H3 thread limit for 3B class of fit tolerance\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for easy entry in through-holes and adequately deep blind holes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish  -  no coating buildup to affect thread tolerance\u003c\/li\u003e\n\u003cli\u003e3 flutes provide chip clearance and smooth cutting action\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction compatible with standard tapping equipment\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 and tapping heads accepting the 5\/16-18 UNC plug tap shank geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTapping operations should be performed by qualified machinists or maintenance professionals following applicable shop safety procedures. Ensure the workpiece is securely clamped and the correct drill size for 5\/16-18 UNC threads is used before tapping. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Reverse the tap periodically when hand tapping to break chips and prevent tap breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: 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: H3\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: 1-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-23\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.318 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.238 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.3228 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: 103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.047 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: 1170700\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743983042866,"sku":"1170700","price":25.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38d1c09266ebdbde507078e3c6f08bf7.jpg?v=1788852360","url":"https:\/\/voomisupply.com\/products\/osg-1170700-straight-flute-tap-5-16-18-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}