{"product_id":"accupro-t1640603-spiral-point-tap-9-16-12-cobalt","title":"Accupro T1640603 Spiral Point Tap 9\/16-12 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO T1640603 is a spiral point tap designed for cutting right-hand internal threads in through-hole applications. Built from HSS-E cobalt steel with an oxide finish, this tap handles tough materials including stainless steel, alloy steel, and high-temperature alloys where standard HSS taps wear prematurely. The 9\/16-12 thread size, 3-flute configuration, and plug chamfer make it a workhorse choice for production and maintenance tapping operations. Overall length is 3.5945 inches with a thread length of 1.181 inches, and the shank diameter measures 0.4290 inches. It carries a Thread Limit of H3 and a Class of Fit of 3\/3B, meeting standard tolerance requirements for most fastener applications.\u003c\/p\u003e\u003cp\u003eThis tap is suited for machine tapping in through-hole setups in metalworking environments — job shops, maintenance and repair operations, and production machining. The spiral point geometry pushes chips forward ahead of the tap rather than backing them out, making it well-suited for automated tapping cycles on drill presses, CNC machining centers, and tapping heads. It is not designed for blind-hole applications where chip evacuation forward is not possible. No coolant-through capability is present, so external flood or mist coolant should be applied during use to extend tool life.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHSS-E cobalt construction provides increased heat and wear resistance over standard HSS in difficult-to-machine alloys\u003c\/li\u003e\n\u003cli\u003eOxide finish improves lubricity and helps resist galling during tapping\u003c\/li\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward, keeping the flutes clear in through-hole applications\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (3-5 thread lead) eases entry and distributes cutting load across multiple teeth\u003c\/li\u003e\n\u003cli\u003eH3 thread limit and 3\/3B Class of Fit maintain tight tolerance control for standard unified coarse thread fastener fits\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction compatible with standard tapping attachments and CNC rigid tapping cycles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement spiral point tap for through-hole tapping operations requiring a 9\/16-12 UNC thread form with H3 tolerance and 3\/3B Class of Fit.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by a machinist or maintenance technician using a tapping chuck, floating tap holder, or rigid tapping spindle. Always ensure the workpiece is securely clamped and the spindle is properly aligned before starting the tapping cycle. Use appropriate cutting fluid for the workpiece material to prevent galling and extend tap life. Follow shop safety practices and applicable OSHA machine guarding requirements when operating tapping equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-12 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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3\/3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: HSS-E Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5945 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.181 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.4290 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.6570 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: T1640603\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51751249084722,"sku":"T1640603","price":58.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9d3940cdffd2e6da5f8383c7ed3afc4_a60d2fed-5d3d-4218-bd85-04159875739a.jpg?v=1788922465","url":"https:\/\/voomisupply.com\/products\/accupro-t1640603-spiral-point-tap-9-16-12-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}