{"product_id":"eagle-cutting-tool-ht-172-b-i-hss-hand-bottom-tap-1-72","title":"Eagle Cutting Tool HT-172-B-I Hss Hand Bottom Tap 1-72","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EAGLE CUTTING TOOL HT-172-B-I is a 1-72 high-speed steel (HSS) hand bottom tap designed for cutting internal threads close to the bottom of a blind hole. The bottom tap geometry features minimal lead threads, allowing the cutting edge to reach near the full depth of a hole where plug or taper taps cannot follow. This tap is sized to the 1-72 thread specification, meaning a 0.073-inch nominal diameter with 72 threads per inch, making it suited for fine-threaded fastener work in precision components. Machinists, toolmakers, and maintenance technicians working with miniature hardware install this tap by hand using a tap wrench.\u003c\/p\u003e\n\u003cp\u003eThe HT-172-B-I is used in applications requiring fine-pitch internal threads in small-diameter blind holes. Typical installations include instrument assembly, electronics hardware, optical equipment, and light mechanical assemblies where 1-72 machine screws are the fastener of choice. This is an import-grade tap suited for production runs and general shop use where high-volume throughput makes cost-per-tap a practical consideration over premium domestic tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBottom tap geometry allows threading to near full depth in blind holes\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel (HSS) construction provides hardness and wear resistance across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003e1-72 thread form for fine-pitch miniature fastener applications\u003c\/li\u003e\n  \u003cli\u003eHand tap design for use with a standard tap wrench\u003c\/li\u003e\n  \u003cli\u003eImport grade offers a practical cost option for general shop and production use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard shop tap for use in any application requiring a 1-72 UNF bottom hand tap.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by hand using a tap wrench — power tapping with this tool is not recommended. Before tapping, ensure the correct tap drill size for 1-72 threads is used and the workpiece is secured. Apply cutting fluid appropriate to the workpiece material to extend tap life and reduce the risk of breakage. Use a reversing motion periodically to break chips, particularly in deeper blind holes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-72\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: UNF (Unified Fine)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Style\u003c\/strong\u003e: Bottom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Method\u003c\/strong\u003e: Hand Tap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.31 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 1\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: EAGLE CUTTING TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HT-172-B-I\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EAGLE CUTTING TOOL","offers":[{"title":"Default Title","offer_id":51233627734322,"sku":"HT-172-B-I","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307622680.png?v=1780105069","url":"https:\/\/voomisupply.com\/products\/eagle-cutting-tool-ht-172-b-i-hss-hand-bottom-tap-1-72","provider":"Voomi Supply","version":"1.0","type":"link"}