{"product_id":"hertel-008380as25-straight-flute-tap-5-16-18-unc-hss-tin","title":"Hertel 008380AS25 Straight Flute Tap 5\/16-18 Unc Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 008380AS25 is a straight flute tap designed to cut 5\/16-18 UNC internal threads in through-holes and shallow blind holes where chip control is managed by the operator. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, this tap delivers improved surface hardness and lubricity compared to uncoated HSS, extending tool life in moderate-production threading applications. The plug chamfer (3-5 threads of lead) provides a balanced entry suitable for most standard through-hole and blind-hole work. With a thread limit of H3, it holds a 3B class of fit, meeting standard commercial tolerance requirements. Licensed machinists and maintenance technicians are the primary users.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading ferrous and non-ferrous materials in job shop, maintenance, and production environments. The 5\/16-18 UNC designation makes it a common choice for general mechanical assembly, repair work, and fabrication tasks where 5\/16-inch fasteners are specified. It is used in both manual tapping handles and low-speed machine tapping setups. The right-hand thread direction is standard for the vast majority of fastener applications. With a thread length of 1-1\/8 inches and an overall length of 2-23\/32 inches, it fits standard tap holders without modification.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread form with H3 thread limit for 3B class of fit\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides 3-5 thread lead-in for versatile through-hole and blind-hole use\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for toughness across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating increases surface hardness and reduces friction at the cutting edge\u003c\/li\u003e\n\u003cli\u003e4 straight flutes with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement — compatible with hand tapping and standard machine tapping\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement or production tap for any application requiring a 5\/16-18 UNC right-hand internal thread with a 3B class of fit in standard tap handles or machine tap holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the workpiece before tapping and ensure the correct tap drill size for 5\/16-18 UNC is used prior to starting this tap. Apply cutting fluid appropriate to the workpiece material to reduce heat buildup and extend tap life. When machine tapping, use a low spindle speed and a tapping attachment with torque relief to avoid overloading the tap. Inspect the tap for wear or chipping before each use and discard if the cutting edges are compromised.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 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: Plug\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\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2-23\/32 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: 0.06 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: 008380AS25\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728715022642,"sku":"008380AS25","price":28.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/efd8a3dcb23fa76ecc84063b6af0c3f8.jpg?v=1788695396","url":"https:\/\/voomisupply.com\/products\/hertel-008380as25-straight-flute-tap-5-16-18-unc-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}