{"product_id":"osg-1211400-spiral-point-tap-4-40-unc-2-flute-hss","title":"Osg 1211400 Spiral Point Tap 4-40 Unc 2 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1211400 is a spiral point plug tap designed for machine tapping through-holes in a wide range of metals. Built from high-speed steel with a bright finish, it cuts a 4-40 UNC right-hand thread and features two flutes with a plug chamfer for progressive thread engagement. The H3 thread limit provides consistent tolerance control for standard 4-40 fastener applications. At 1.875 inches overall length with a 0.319-inch thread length and a 0.141-inch shank diameter, this tap fits standard tap holders used in CNC machining centers, drill presses, and tapping machines. It is installed by machinists and tool-and-die professionals working in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is suited for through-hole tapping operations in both production and job-shop settings. The spiral point geometry pushes chips forward ahead of the cutting edge, making it effective in through-hole applications where chip evacuation is a priority. Compatible material applications include aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel, giving it broad utility across ferrous and non-ferrous workpieces commonly encountered in mechanical and industrial fabrication work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC right-hand thread form for standard inch-series fastener applications\u003c\/li\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward, optimizing through-hole tapping performance\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread engagement and reduced entry force\u003c\/li\u003e\n\u003cli\u003eH3 thread limit ensures consistent tolerance fit for standard 4-40 mating fasteners\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction with bright finish suitable for a broad range of metals\u003c\/li\u003e\n\u003cli\u003eCompact 1.875-inch overall length fits standard collet and tap holder setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\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. Fits standard tap holders and collets sized for a 0.141-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists using CNC tapping cycles, drill presses, or hand tapping equipment with appropriate tap holders. Always ensure the workpiece is securely fixtured and the spindle is properly aligned before beginning the tapping cycle. Use appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Never reverse a spiral point tap under power without confirming the machine cycle supports it, as doing so in a blind hole can cause breakage.\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 Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.319 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\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\u003eWeight\u003c\/strong\u003e: 0.01 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: 1211400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740996010290,"sku":"1211400","price":29.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c8df8d98399392c5087a16e44599f933.jpg?v=1788828804","url":"https:\/\/voomisupply.com\/products\/osg-1211400-spiral-point-tap-4-40-unc-2-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}