{"product_id":"eagle-cutting-tool-ht-640-b-d-6-40-hss-bottom-tap","title":"Eagle Cutting Tool HT-640-B-D 6-40 Hss Bottom Tap","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe EAGLE CUTTING TOOL HT-640-B-D is a 6-40 high-speed steel (HSS) bottom tap manufactured in the USA. Bottom taps, also called plug-bottoming or bottoming taps, are ground with a minimal lead chamfer so threads can be cut to the full depth of a blind hole. The 6-40 thread designation indicates a No. 6 screw size with 40 threads per inch, a fine-pitch specification common in precision mechanical and electrical assemblies. This tap is suited for machinists, maintenance technicians, and field service professionals who need to thread or re-thread small-diameter blind holes cleanly and completely.\u003c\/p\u003e\u003cp\u003eThe HT-640-B-D is used wherever a 6-40 threaded hole must be tapped to its full depth, including instrument panels, electrical enclosures, light mechanical assemblies, and precision fixtures. The fine 40-TPI pitch makes it appropriate for thin-walled materials and applications where vibration resistance or close tolerancing is required. It is a standard production tap appropriate for both shop and field use on ferrous and non-ferrous materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottom tap geometry allows threading to the full depth of blind holes\u003c\/li\u003e\n\u003cli\u003e6-40 thread form — No. 6 screw diameter, 40 threads per inch fine pitch\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel (HSS) construction for durability across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eUSA manufactured\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.08 pounds — suitable for hand tap wrenches and small machine tap holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement or production tap for any application requiring a 6-40 UNF threaded hole tapped to full blind-hole depth.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by a machinist or maintenance technician using a hand tap wrench or tapping head sized for the tap shank. Before tapping, ensure the correct drill size for a 6-40 thread is used and the workpiece is securely fixtured. Apply cutting fluid appropriate for the workpiece material to reduce heat and extend tap life. Back the tap off periodically to break chips and prevent binding, especially in blind holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 6-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Bottom Tap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: EAGLE CUTTING TOOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HT-640-B-D\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EAGLE CUTTING TOOL","offers":[{"title":"Default Title","offer_id":51233649656114,"sku":"HT-640-B-D","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307623081.png?v=1780105735","url":"https:\/\/voomisupply.com\/products\/eagle-cutting-tool-ht-640-b-d-6-40-hss-bottom-tap","provider":"Voomi Supply","version":"1.0","type":"link"}