{"product_id":"osg-1005200108-straight-flute-tap-1-4-20-unc-bottoming","title":"Osg 1005200108 Straight Flute Tap 1\/4-20 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1005200108 is a straight flute machine tap designed for threading 1\/4-20 UNC holes in production and maintenance machining environments. Built from powdered metal and finished with a TiCN (Titanium Carbonitride) coating, it delivers improved wear resistance and extended tool life compared to standard high-speed steel taps. The bottoming chamfer allows threading close to the bottom of blind holes. With 4 flutes and an H3 thread limit, this tap is suited for achieving 3B class of fit tolerances in precision threading applications. Overall length is 2.5 inches with a thread length of approximately 0.598 inches.\u003c\/p\u003e\u003cp\u003eThis tap is rated for use in aluminum and cast iron. The bottoming chamfer style makes it the right choice when full thread depth is needed in blind-hole applications where a plug or taper tap cannot reach the bottom. It is well suited for CNC machining centers, drill presses, and manual tapping operations in job shops, toolrooms, and production lines. The right-hand thread direction covers the vast majority of standard fastener applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eTiCN coating for increased hardness, lubricity, and wear resistance\u003c\/li\u003e\n\u003cli\u003ePowdered metal construction for improved toughness over standard HSS\u003c\/li\u003e\n\u003cli\u003e4 flutes with H3 thread limit for consistent 3B class of fit tolerances\u003c\/li\u003e\n\u003cli\u003eRated for aluminum and cast iron applications\u003c\/li\u003e\n\u003cli\u003eRight-hand thread, 1\/4-20 UNC — matches the most common inch-series fastener standard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for tapping 1\/4-20 UNC threads in aluminum and cast iron workpieces. Suitable for use with standard 0.255-inch shank tap holders and collets in CNC and manual tapping setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the workpiece and ensure the tap is properly aligned with the pre-drilled hole before beginning the tapping operation. Use an appropriate cutting fluid or tapping compound for the specific material being threaded — aluminum and cast iron have different lubrication requirements. Inspect the tap for wear or chipping before each use. Do not force a tap that has stalled — back out, clear chips, and re-evaluate before continuing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Machine, Straight Flute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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\u003eThread Length\u003c\/strong\u003e: 0.598 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.181 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Powdered Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Iron\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: 10052\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.039 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: 1005200108\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51734302064946,"sku":"1005200108","price":57.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5471bd6ea05bcee472f0b9e384f3316e.jpg?v=1788762445","url":"https:\/\/voomisupply.com\/products\/osg-1005200108-straight-flute-tap-1-4-20-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}