{"product_id":"hertel-k008684as-1-1-2-6-unc-straight-flute-tap-hss","title":"Hertel K008684AS 1-1\/2-6 Unc Straight Flute Tap Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K008684AS is a straight flute tap designed for cutting 1-1\/2-6 UNC internal threads in a range of workpiece materials. Built from high speed steel with a bright uncoated finish, this tap delivers reliable thread-forming performance in production and maintenance environments. It carries a taper chamfer for gradual thread engagement on entry, reducing the load on the cutting edges at the start of the cut. The 4-flute geometry provides balanced chip control and rigidity across the full 6.375-inch overall length. Machinists and toolroom technicians use this tap for through-hole and blind-hole applications requiring a Class 3B fit with an H4 thread limit.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading operations on ferrous metals, cast iron, and similar machinable materials where a straight flute design is preferred. The taper chamfer makes it a standard choice for starting threads in through-holes or pre-drilled holes where the tap can be driven fully through the workpiece. It is appropriate for both manual tapping and machine tapping setups in general manufacturing, job shop, MRO, and industrial maintenance applications. The right-hand thread direction and UNC specification match the most common fastener standard used in North American trade and manufacturing work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-1\/2-6 UNC thread size for large-diameter internal threading\u003c\/li\u003e\n\u003cli\u003eTaper chamfer provides gradual entry and reduced starting torque\u003c\/li\u003e\n\u003cli\u003e4-flute straight design offers rigidity and stable chip evacuation\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles a wide range of machinable materials\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for use with standard cutting fluids\u003c\/li\u003e\n\u003cli\u003eH4 thread limit and Class 3B fit for standard tolerance threading\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard-geometry replacement tap for 1-1\/2-6 UNC through-hole threading applications compatible with common tap holders and machine spindles accepting large-shank straight flute taps.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed and operated by machinists or toolroom technicians using a tap wrench, tapping head, or CNC\/manual machine spindle. Always verify the pre-drilled hole diameter against the recommended tap drill size for 1-1\/2-6 UNC before beginning. Apply appropriate cutting fluid throughout the operation to extend tool life and maintain thread quality. Inspect the tap for wear or chipping between uses and never force a tap that has stalled in the hole.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/2-6\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: 4\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: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.375 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: 1.7 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K008684AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51734713172274,"sku":"K008684AS","price":418.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cffbda6775ff8e5f3fe09849183a0b3.jpg?v=1788765693","url":"https:\/\/voomisupply.com\/products\/hertel-k008684as-1-1-2-6-unc-straight-flute-tap-hss","provider":"Voomi Supply","version":"1.0","type":"link"}