{"product_id":"import-bdna-20691-tap-set-5-8-18-unf-hss-gold-oxide","title":"Import BDNA-20691 Tap Set 5\/8-18 Unf Hss Gold Oxide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IMPORT BDNA-20691 is a 3-piece tap set designed for cutting 5\/8-18 UNF internal threads in metal workpieces. The set includes bottoming, plug, and taper chamfer styles, allowing machinists and maintenance technicians to start, progress, and finish threads in through-holes or blind holes with a single kit. All three taps are ground from high-speed steel (HSS) with a gold oxide finish that provides mild lubricity and corrosion resistance. Each tap features 4 flutes for efficient chip evacuation and carries a Thread Limit of H3, suited for standard UNF tolerance fits. Overall length is 3-13\/16 inches.\u003c\/p\u003e\u003cp\u003eThis tap set is used in machine shops, maintenance and repair operations (MRO), and field service environments wherever 5\/8-18 UNF threaded holes are required. The three-chamfer configuration makes the set practical for both through-hole and blind-hole applications in steel, cast iron, aluminum, and similar machinable metals. Machinists, tool-and-die workers, and industrial maintenance techs are the primary users of this set.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThree-piece set includes bottoming, plug, and taper chamfer taps for complete thread-cutting workflow\u003c\/li\u003e\n\u003cli\u003e5\/8-18 UNF thread form for fine-pitch unified national thread applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides hardness and wear resistance for production and MRO use\u003c\/li\u003e\n\u003cli\u003e4-flute geometry supports efficient chip removal in a range of metals\u003c\/li\u003e\n\u003cli\u003eH3 thread limit for standard tolerance UNF fits\u003c\/li\u003e\n\u003cli\u003eGold oxide finish adds mild lubricity and surface protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 5\/8-18 UNF internal threads; compatible with standard tap holders, T-handle tap wrenches, and machine tap chucks accepting the tap shank size appropriate for this thread range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the workpiece and ensure the correct pilot hole diameter is drilled before tapping — refer to standard UNF tap drill charts for 5\/8-18. Use cutting fluid appropriate to the workpiece material to extend tap life and reduce the risk of tap breakage. Begin with the taper tap to align the thread, follow with the plug tap, and finish with the bottoming tap when threading to the bottom of a blind hole. Power down any machine spindle and secure the work holding device before repositioning the tap or changing chamfer style.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-18 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Styles\u003c\/strong\u003e: Bottoming, Plug, Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-13\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Gold Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePieces Included\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: IMPORT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BDNA-20691\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51718095995186,"sku":"BDNA-20691","price":121.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d3b3ea6c07baac4412a8ab94eb6e82a6.jpg?v=1788549524","url":"https:\/\/voomisupply.com\/products\/import-bdna-20691-tap-set-5-8-18-unf-hss-gold-oxide","provider":"Voomi Supply","version":"1.0","type":"link"}