{"product_id":"osg-1738901-spiral-point-tap-5-8-11-unc-3-flute-hss","title":"Osg 1738901 Spiral Point Tap 5\/8-11 Unc 3 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1738901 is a spiral point plug tap designed for threading 5\/8-11 UNC internal threads in through-hole applications. Built from Vanadium High Speed Steel (HSS-E) with a steam oxide coating, it delivers improved lubricity and corrosion resistance during cutting operations. The plug chamfer distributes cutting forces over several leading threads, making it well suited for machine tapping in a production environment. With 3 flutes and an H5 thread limit, the tap holds close tolerance and produces consistent Class 2B fits. Overall length is 3.811 inches with a thread length of 1.137 inches and a shank diameter of 0.48 inches. Installed by machinists and maintenance technicians on CNC machining centers, drill presses, or tapping machines.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for right-hand threading in materials including low-carbon steel, medium-carbon steel, hardened steel, and stainless steel. It is a standard choice for through-hole tapping in general manufacturing, fabrication shops, and maintenance repair operations where a 5\/8-11 UNC thread is required. The spiral point geometry pushes chips forward ahead of the tap, keeping the flutes clear during continuous machine tapping cycles. It is not designed for blind-hole applications where chip evacuation forward into the hole is not acceptable.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/8-11 UNC thread form, Class 2B fit with H5 thread limit for consistent tolerance control\u003c\/li\u003e\n  \u003cli\u003eVanadium High Speed Steel (HSS-E) construction for increased wear resistance over standard HSS\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and improves chip flow during cutting\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer  -  approximately 3 to 5 threads  -  distributes cutting load and eases machine entry\u003c\/li\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward, optimized for through-hole machine tapping\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction; no coolant-through feature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole machine tapping in low-carbon steel, medium-carbon steel, hardened steel, and stainless steel. Fits standard tap holders accepting a 0.48-inch shank diameter in the OSG Series 300 product family.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed by a qualified machinist or maintenance technician using a properly aligned tapping head or rigid tap holder. Ensure the spindle speed and feed rate are appropriate for the workpiece material and machine type before beginning the cycle. Apply cutting fluid or tapping compound rated for the material being threaded to extend tool life and improve thread quality. Do not reverse the tap under power without confirming the machine is set for synchronized reversing to avoid breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: H5\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium High Speed Steel (HSS-E)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.811 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.137 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.48 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 300\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.22 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: 1738901\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51742924144946,"sku":"1738901","price":107.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebd372d8ebc5f2470eda1ae1f968e443.jpg?v=1788840519","url":"https:\/\/voomisupply.com\/products\/osg-1738901-spiral-point-tap-5-8-11-unc-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}