{"product_id":"osg-1240802-spiral-point-tap-5-16-18-unc-hss","title":"Osg 1240802 Spiral Point Tap 5\/16-18 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1240802 is a spiral point tap designed for threading through-holes in a wide range of metallic workpieces. It carries a 5\/16-18 UNC thread form with a plug chamfer and a 2-flute spiral point geometry that pushes chips forward ahead of the cutting zone, reducing clogging in through-hole applications. The tap is manufactured from high-speed steel and finished with an elektraLUBE coating, which provides built-in lubricity to extend tool life and reduce heat buildup during cutting. Thread fit is Class 2B with an H5 thread limit, producing a standard commercial thread tolerance. Thread length is 1.125 inches. The right-hand cutting direction suits standard CNC and manual tapping operations.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for threading through-holes in production machining, maintenance, and repair environments. It is specified for Series 105 and handles a broad material application range including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel. It is a practical choice for job shops and maintenance machinists who need a single tap capable of working across common ferrous and non-ferrous workpiece materials without changing tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC thread form with plug chamfer for standard through-hole tapping entry\u003c\/li\u003e\n  \u003cli\u003e2-flute spiral point geometry pushes chips forward, reducing chip packing in through-holes\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides toughness across a wide material range\u003c\/li\u003e\n  \u003cli\u003eelektraLUBE coating delivers integrated lubrication to reduce friction and extend tool life\u003c\/li\u003e\n  \u003cli\u003eH5 thread limit and Class 2B fit meet standard commercial thread tolerance requirements\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction; compatible with standard tapping heads, CNC rigid tapping, and manual tap wrenches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole tapping in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel workpieces per the OSG Series 105 specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a standard tap holder, rigid tapping chuck, or manual tap wrench sized for the shank. Ensure the workpiece is securely fixtured and the pilot hole diameter is correct for a 5\/16-18 UNC tap before starting. Apply cutting fluid if supplemental lubrication beyond the elektraLUBE coating is required for the specific material. Verify spindle direction and speed settings before engaging the tap in CNC applications to avoid thread damage or tool breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\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 Type\u003c\/strong\u003e: Plug\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\u003eThread Length\u003c\/strong\u003e: 1.125 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: elektraLUBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 105\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel, Hardened Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 1240802\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51750572556594,"sku":"1240802","price":31.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ddd7cd8766cd5df55ae3666b21266c55.jpg?v=1788916857","url":"https:\/\/voomisupply.com\/products\/osg-1240802-spiral-point-tap-5-16-18-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}