{"product_id":"hertel-k008086as-straight-flute-tap-4-40-unc-hss","title":"Hertel K008086AS Straight Flute Tap 4-40 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K008086AS is a straight flute tap designed to cut 4-40 UNC internal threads in a variety of workpiece materials. Built from high-speed steel with a bright, uncoated finish, this tap features three straight flutes and a taper chamfer to ease thread entry and reduce startup torque. It carries an H2 thread limit, which keeps tolerance control tight for 2B and 3B class-of-fit applications. Overall length is 1.875 inches. Right-hand thread direction is standard. Machinists and tool-and-die technicians use this tap for production threading in CNC machining centers, drill presses, and manual tapping operations.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading small-diameter holes in ferrous and non-ferrous metals, plastics, and similar materials where a 4-40 UNC thread form is required. The taper chamfer makes it well suited for through-hole applications where the tap can advance fully through the material. The straight flute geometry is most effective in short-chipping materials. It is a common choice in light manufacturing, instrumentation work, and general machining environments where 4-40 fasteners are specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC thread form, right-hand thread direction\u003c\/li\u003e\n\u003cli\u003eTaper chamfer for smooth thread entry in through-hole applications\u003c\/li\u003e\n\u003cli\u003eThree straight flutes optimized for short-chipping materials\u003c\/li\u003e\n\u003cli\u003eH2 thread limit for consistent 2B and 3B class-of-fit tolerances\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability in general-purpose machining\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating buildup concerns on small-diameter taps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement straight flute tap for any application requiring a 4-40 UNC, H2, taper chamfer tap in high-speed steel.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by licensed machinists or trained tool operators using a tap wrench, tapping head, or CNC rigid tapping cycle. Always ensure the pilot hole is drilled to the correct minor diameter for a 4-40 UNC thread before tapping. Apply appropriate cutting fluid for the workpiece material to extend tool life and reduce heat buildup. Do not reverse-torque or force the tap if resistance is felt — back off to break chips before continuing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eChamfer Type\u003c\/strong\u003e: Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B, 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\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\u003eOverall Length\u003c\/strong\u003e: 1.875 inches\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: 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: K008086AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51748135502130,"sku":"K008086AS","price":17.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a0994a2af9abc33e485c11292cb40232.jpg?v=1788889503","url":"https:\/\/voomisupply.com\/products\/hertel-k008086as-straight-flute-tap-4-40-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}