{"product_id":"hertel-k008084as-straight-flute-tap-4-40-unc-hss","title":"Hertel K008084AS Straight Flute Tap 4-40 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL K008084AS is a straight flute tap designed for cutting 4-40 UNC internal threads in a variety of metalworking and machining applications. Built from high-speed steel with a bright\/uncoated finish, this tap features a taper chamfer that helps align and start the thread accurately at entry. It runs a 3-flute configuration, which provides good chip clearance in through-hole applications. The H1 thread limit designation indicates a tight tolerance class suited to standard fastener fits. At 1.875 inches overall length with a 0.562-inch thread length, this is a compact tap intended for small-diameter work where precision matters.\u003c\/p\u003e\n\u003cp\u003eThis tap is used primarily in machine shops, maintenance and repair operations, and production environments where 4-40 UNC threaded holes are required. Typical applications include tapping holes in aluminum, mild steel, brass, and similar free-machining materials. The taper chamfer makes it well suited for starting threads in through holes. It is commonly used by machinists, tool-and-die technicians, and MRO professionals working on small assemblies, enclosures, and electronic hardware that require UNC miniature fastener threads.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread form in a compact 1.875-inch overall length\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction for durability across common shop materials\u003c\/li\u003e\n  \u003cli\u003eTaper chamfer for easy thread starting and alignment in through holes\u003c\/li\u003e\n  \u003cli\u003e3 straight flutes for chip clearance in non-interrupted cuts\u003c\/li\u003e\n  \u003cli\u003eH1 thread limit for close-tolerance standard fastener fits\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish — no coating buildup to affect thread dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement or production tap for 4-40 UNC through-hole threading operations in general machining and MRO applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is intended for use by machinists and qualified shop personnel using a tapping machine, drill press, or hand tap wrench with proper alignment. Always drill the correct tap drill size before tapping and ensure the workpiece is securely fixtured. Apply appropriate cutting fluid to extend tool life and reduce galling, especially in steel. Do not force or back-tap beyond the thread length, as the small 4-40 diameter is susceptible to breakage under side load or torque overload.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Taper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1410 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: K008084AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51735585554738,"sku":"K008084AS","price":18.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ac900f9e29c7e675ba25fee6b1f184e5.jpg?v=1788773130","url":"https:\/\/voomisupply.com\/products\/hertel-k008084as-straight-flute-tap-4-40-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}