{"product_id":"osg-1405008808-thread-forming-tap-5-16-18-unc-bottoming","title":"Osg 1405008808 Thread Forming Tap 5\/16-18 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1405008808 is a thread forming tap in the EXOTAP VP-NRT series, designed for cold-forming internal threads without cutting or producing chips. Built from powdered metal high-speed steel (PM-HSS) with a TiCN coating, it handles the 5\/16-18 UNC thread form with a bottoming chamfer of 1 to 1.5 threads. The bottoming chamfer allows threading to within a few threads of the bottom of a blind hole. Overall length is 2.719 inches, with a shank diameter of 0.318 inches. Licensed machinists and toolroom technicians install this tap in CNC machining centers or manual drill presses for production threading applications.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading in a range of ferrous and non-ferrous materials. It performs in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The EXOTAP VP-NRT series is developed for applications where chip-free threading is required, such as thin-walled parts, deep blind holes, or assemblies where loose chips would cause quality issues. It is a right-hand thread tap with an H9 thread limit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming (chipless) design eliminates chip evacuation concerns in blind holes\u003c\/li\u003e\n\u003cli\u003ePowdered metal high-speed steel construction for improved wear resistance and toughness over conventional HSS\u003c\/li\u003e\n\u003cli\u003eTiCN coating reduces friction and extends tool life in abrasive and hard materials\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer (1 to 1.5P) allows threading close to the base of blind holes\u003c\/li\u003e\n\u003cli\u003eH9 thread limit for controlled fit in precision threaded assemblies\u003c\/li\u003e\n\u003cli\u003eCompatible with material application codes P, M, and N covering steel, stainless, and non-ferrous alloys\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole threading in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum per OSG EXOTAP VP-NRT series material application specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require a proper forming tap drill size, which is larger than a standard cut-tap drill  -  consult published forming tap drill charts for the 5\/16-18 UNC form before drilling. Adequate tapping fluid or cutting oil appropriate for the workpiece material should be applied before tapping. Ensure the spindle is aligned perpendicular to the workpiece to avoid tap breakage, especially in harder materials. Operate within the recommended RPM range for the material and tap diameter to avoid galling or thread distortion.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\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: 18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1 to 1.5P\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: H9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Powdered Metal High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.719 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.6654 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.126 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Die Steel, Hardened Steel, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: EXOTAP VP-NRT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: 1405008808\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743224004914,"sku":"1405008808","price":90.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f7f578c634c35ef27c59a0556a4e8b3b_2a006b76-d07d-400c-b36e-50739e1e6aa6.jpg?v=1788844134","url":"https:\/\/voomisupply.com\/products\/osg-1405008808-thread-forming-tap-5-16-18-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}