{"product_id":"osg-0140801-spiral-flute-tap-5-16-24-unf-bottoming","title":"Osg 0140801 Spiral Flute Tap 5\/16-24 Unf Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 0140801 is a spiral flute bottoming tap designed for threading 5\/16-24 UNF right-hand internal threads in difficult-to-machine materials. Built from powdered metal and finished with a steam oxide coating, this tap handles stainless steel, hardened steel, titanium, and high-nickel alloys where standard high-speed steel taps fall short. The modified bottoming chamfer allows threading close to the bottom of blind holes. With a 10-degree helix angle and three flutes, it efficiently evacuates chips in tough materials. Overall length is 2.718 inches and thread length is 0.445 inches. This is a Series 313NI tap with an H4 thread limit and a 2B class of fit.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for CNC machining centers, manual mills, and drill press tapping operations where UNF threads are required in hard or exotic alloys. The spiral flute geometry makes it particularly effective in blind-hole applications common in aerospace, automotive, and industrial manufacturing. It is a single-piece tool intended for use with standard tap holders or floating tap adaptors compatible with its 0.168-inch shank diameter. Licensed machinists and toolroom technicians are the primary users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eModified bottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003ePowdered metal construction for increased wear resistance in hard and exotic materials\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and improves lubrication retention\u003c\/li\u003e\n  \u003cli\u003eSpiral flute design promotes efficient chip evacuation in difficult-to-machine alloys\u003c\/li\u003e\n  \u003cli\u003eH4 thread limit with 2B class of fit for standard UNF tolerance requirements\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, 10-degree helix angle, no coolant-through\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 5\/16-24 UNF internal threads in stainless steel, hardened steel, titanium, and high-nickel alloys. Part of the OSG Series 313NI product line.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists familiar with tapping operations and speeds appropriate for the workpiece material. Power down or disengage the spindle before loading or unloading the tap. Use appropriate cutting fluid or tapping compound for the material being threaded to extend tool life and reduce risk of tap breakage. Follow machine manufacturer guidelines and applicable shop safety standards when operating tapping equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-24 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 10 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Powdered Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel, Hardened Steel, Titanium, High-Nickel Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.718 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.445 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.168 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.752 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\u003eSquare Size\u003c\/strong\u003e: 0.238 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: 313NI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 0140801\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51739661304114,"sku":"0140801","price":78.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ba53058cbced193c44428f462b90601_bbd8045f-6af7-4f29-91fb-562c3b9bc6f8.jpg?v=1788817472","url":"https:\/\/voomisupply.com\/products\/osg-0140801-spiral-flute-tap-5-16-24-unf-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}