{"product_id":"hertel-k008449as-spiral-flute-tap-3-8-16-unc-hss","title":"Hertel K008449AS Spiral Flute Tap 3\/8-16 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL K008449AS is a spiral flute tap designed to cut internal threads in through-holes and blind holes where chip evacuation is critical. Manufactured from high-speed steel (HSS), it cuts a 3\/8-16 UNC right-hand thread to a 3B class of fit with an H3 thread limit, making it suitable for standard tolerance threading applications. The 52-degree helix angle and fast flute style pull chips up and out of the hole during cutting, reducing the risk of chip packing in ductile and softer materials. Overall length is 2-15\/16 inches. This tap is intended for use by machinists, tool and die makers, and maintenance technicians.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in production and maintenance threading operations on ferrous and non-ferrous metals where a 3\/8-16 UNC thread form is required. The plug chamfer provides a gradual lead-in, making it appropriate for through-hole applications and shallow blind holes with adequate thread runout. The spiral flute geometry is especially effective in materials such as aluminum, mild steel, and other materials that produce continuous or stringy chips. It is a common choice for manual tapping, CNC machining centers, and drill press operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC thread form with right-hand thread direction\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 3B class of fit for standard tolerance threading\u003c\/li\u003e\n  \u003cli\u003e52-degree helix angle with fast flute style for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for through-hole and shallow blind-hole applications\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction for durability across common workpiece materials\u003c\/li\u003e\n  \u003cli\u003e3 flutes for balanced cutting and chip clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-replacement or standard spiral flute tap for applications requiring a 3\/8-16 UNC, H3, 3B class of fit threaded hole using a plug chamfer tap with a 2-15\/16-inch overall length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or maintenance technician. Power down and lock out any machine before changing tooling. Use the appropriate tap wrench, tapping head, or CNC toolholder rated for the tap shank size, and apply a suitable cutting fluid for the workpiece material to extend tool life and improve thread quality. Do not force the tap if resistance increases suddenly, as this may indicate chip packing or tap breakage risk.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Fast\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 52 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-15\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.9 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K008449AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51744073679154,"sku":"K008449AS","price":47.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4920dc6f5ac3b34b87436ea2d1f75298.jpg?v=1788853843","url":"https:\/\/voomisupply.com\/products\/hertel-k008449as-spiral-flute-tap-3-8-16-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}