{"product_id":"import-bdna-20743-straight-flute-tap-5-8-11-unc","title":"Import BDNA-20743 Straight Flute Tap 5\/8-11 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IMPORT BDNA-20743 is a straight flute bottoming tap designed for cutting right-hand internal threads in pre-drilled through or blind holes. Built from high-speed steel with a gold oxide coating, this tap is engineered for thread-cutting operations where the tool must reach close to the bottom of a blind hole. It features a 4-flute straight-flute geometry, a 5\/8-11 UNC thread profile, and an H3 thread limit for consistent tolerance control. The bottoming chamfer provides minimal lead-in, allowing threads to be cut within one to two thread lengths of the hole bottom. Machinists and maintenance technicians use this tap in manual and machine tapping applications across ferrous and non-ferrous materials.\u003c\/p\u003e\u003cp\u003eThis tap is suited for production and repair threading work in machine shops, industrial maintenance environments, and manufacturing operations. The 5\/8-11 UNC designation makes it appropriate for standard unified coarse-thread applications, commonly found in structural fastening, equipment assembly, and fixture fabrication. The bottoming style is the correct choice when a through tap or plug tap has already been used to start threads and final full-depth threading is needed at the bottom of a closed hole.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/8-11 UNC thread profile with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e4 straight flutes for chip management in manual and machine tapping\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eGold oxide coating helps reduce friction and provides light corrosion resistance\u003c\/li\u003e\n\u003cli\u003eH3 thread limit ensures consistent thread tolerance for standard UNC fits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard-style replacement or service tap for 5\/8-11 UNC bottoming thread applications in manual tap handles, T-handle wrenches, and compatible machine tapping heads.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by a machinist or maintenance technician using a tap wrench, T-handle, or machine tapping attachment. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 5\/8-11 UNC threads before beginning. Apply appropriate cutting fluid for the workpiece material to reduce heat and extend tool life. When using a bottoming tap, a plug or taper tap should be used first to establish threads before the bottoming tap is run in to complete the thread depth.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11\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: 11\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\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Straight\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: Gold Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IMPORT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BDNA-20743\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51693082247474,"sku":"BDNA-20743","price":27.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/08145d960437fea99167ababfe62bf81.jpg?v=1788307075","url":"https:\/\/voomisupply.com\/products\/import-bdna-20743-straight-flute-tap-5-8-11-unc","provider":"Voomi Supply","version":"1.0","type":"link"}