{"product_id":"osg-5004602-spiral-flute-tap-5-16-18-unc-hss-elektralube","title":"Osg 5004602 Spiral Flute Tap 5\/16-18 Unc Hss Elektralube","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5004602 is a spiral flute tap designed for cutting internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel with an elektraLUBE coating, this tap produces a 5\/16-18 UNC right-hand thread to a 2B class of fit with an H5 thread limit. The spiral flute geometry evacuates chips back through the flute toward the shank, making it well suited for blind-hole tapping applications where chip packing is a concern. It carries a plug chamfer for general-purpose starting and is sized at 2-23\/32 inches overall length with a shank diameter of 0.429 inches. Licensed trades and machining professionals use this tool in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is appropriate for threading operations in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The 50-degree helix angle promotes smooth chip flow at moderate to high cutting speeds, reducing the risk of tap breakage in deeper blind holes. It is a practical choice for both CNC tapping cycles and hand-tapping operations where thread quality and consistency are required across mixed-material workloads.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread form, 2B class of fit, H5 thread limit for controlled tolerance output\u003c\/li\u003e\n\u003cli\u003e3-flute spiral geometry at 50-degree helix angle for efficient chip evacuation in blind holes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides toughness across a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eelektraLUBE coating reduces friction and improves tool life without external cutting fluid in light-duty applications\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for standard general-purpose through and blind-hole entry\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, no coolant-through requirement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces requiring a 5\/16-18 UNC internal thread to a 2B class of fit. Part of OSG Series 107.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed in a tapping chuck or collet sized for the 0.429-inch shank diameter before use. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for a 5\/16-18 UNC thread prior to tapping. When used in a CNC machine, verify spindle speed and feed rate match the tap pitch to prevent thread damage or breakage. Inspect the tap for wear or chipping before each use, as a damaged cutting edge can tear threads or seize in the hole.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: elektraLUBE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-23\/32 inches (3.938 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.429 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.972 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 107\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5004602\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740475130162,"sku":"5004602","price":61.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bc9fe2249fcc01eed669e340ac0a0905.jpg?v=1788825247","url":"https:\/\/voomisupply.com\/products\/osg-5004602-spiral-flute-tap-5-16-18-unc-hss-elektralube","provider":"Voomi Supply","version":"1.0","type":"link"}