{"product_id":"hertel-k008082as-straight-flute-tap-4-40-unc-hss","title":"Hertel K008082AS Straight Flute Tap 4-40 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K008082AS is a straight flute tap designed to cut 4-40 UNC internal threads in a wide range of materials. It features 2 flutes and a plug chamfer, making it suited for through-hole tapping applications where chips can evacuate ahead of the tap. Manufactured from high-speed steel with a bright, uncoated finish, it delivers reliable performance across general-purpose threading tasks. The H2 thread limit provides controlled tolerance for consistent 2B and 3B class-of-fit threads. Overall length is 1.875 inches. Right-hand thread direction is standard. This tap is a staple in machine shops, maintenance environments, and production settings where small-diameter threading is routine.\u003c\/p\u003e\u003cp\u003eThe K008082AS is intended for tapping 4-40 UNC threads in ferrous and non-ferrous metals, plastics, and similar machinable materials. The plug chamfer style requires a starter hole and is best suited for through-hole applications rather than blind holes. It is commonly used in machine shops, tool rooms, and assembly operations where small-fastener threads are needed in production or repair work. The straight flute design keeps the tool simple and rigid for use in hand tapping or low-speed machine tapping setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC thread form cuts standard small-diameter machine screw threads\u003c\/li\u003e\n\u003cli\u003e2 straight flutes provide rigidity and straightforward chip management in through-hole applications\u003c\/li\u003e\n\u003cli\u003ePlug chamfer eases entry and distributes cutting load across the leading threads\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction handles general-purpose threading in a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eH2 thread limit ensures consistent 2B and 3B class-of-fit compliance\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with standard tapping fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any application requiring 4-40 UNC internal threads with a 2B or 3B class of fit. Fits standard tap holders and collets sized for small-diameter taps.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eUse appropriate cutting or tapping fluid to extend tool life and improve thread quality. Ensure the workpiece is securely fixtured before beginning the tapping operation. For hand tapping, use a proper tap wrench to maintain alignment and avoid side loading that can break small-diameter taps. Back off periodically to break chips when tapping deeper holes.\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B and 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H2\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: 0.13 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: K008082AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51746399191346,"sku":"K008082AS","price":20.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c6d74914277618b35c4f029c3f3ac651.jpg?v=1788869546","url":"https:\/\/voomisupply.com\/products\/hertel-k008082as-straight-flute-tap-4-40-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}