{"product_id":"eagle-cutting-tool-ht-13750-8-p-d-1-3-8-8-hss-hand-plug-tap","title":"Eagle Cutting Tool HT-13750-8-P-D 1-3\/8-8 Hss Hand Plug Tap","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe EAGLE CUTTING TOOL HT-13750-8-P-D is a 1-3\/8 inch diameter, 8 threads-per-inch (TPI) high-speed steel (HSS) hand plug tap manufactured in the USA. Plug taps feature a chamfer on the first 3 to 5 threads, making them the standard starting tap for most through-hole and blind-hole threading applications. This tap cuts internal threads by hand using a tap wrench or adjustable tap handle. Machinists, pipefitters, millwrights, and maintenance technicians reach for this size when threading large-diameter fastener holes in steel, cast iron, and similar ferrous materials.\u003c\/p\u003e\u003cp\u003eThe HT-13750-8-P-D is suited for industrial maintenance, fabrication shops, and field repair work where 1-3\/8 inch-8 UNC threads are required. Common applications include threading holes for large structural bolts, tie rods, and heavy equipment fasteners. The plug chamfer geometry works in both through-holes and sufficiently deep blind holes, making it a versatile choice for general-purpose threading tasks across manufacturing and mechanical trade environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-3\/8 inch diameter, 8 TPI UNC thread form for large-diameter fastener applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel (HSS) construction provides heat resistance and edge retention during hand tapping\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (3-5 thread lead) supports use in through-holes and deep blind holes\u003c\/li\u003e\n\u003cli\u003eUSA manufactured for consistent dimensional accuracy and thread quality\u003c\/li\u003e\n\u003cli\u003eCompatible with standard tap wrenches sized for large-shank taps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a hand plug tap for cutting 1-3\/8 inch-8 UNC internal threads in ferrous and non-ferrous materials where hand tapping is the specified method.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is intended for use by qualified machinists or tradespeople familiar with hand tapping procedures. Always secure the workpiece before tapping and use an appropriate cutting fluid to extend tool life and improve thread finish. Start the tap square to the hole to avoid cross-threading or tap breakage. Back the tap off periodically to break chips, particularly in blind holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Diameter\u003c\/strong\u003e: 1-3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 8 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Hand Plug\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: 1.78 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-13750-8-P-D\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EAGLE CUTTING TOOL","offers":[{"title":"Default Title","offer_id":51233213579570,"sku":"HT-13750-8-P-D","price":147.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307622647.png?v=1780094365","url":"https:\/\/voomisupply.com\/products\/eagle-cutting-tool-ht-13750-8-p-d-1-3-8-8-hss-hand-plug-tap","provider":"Voomi Supply","version":"1.0","type":"link"}