{"product_id":"osg-1987001-spiral-flute-tap-m12x1-75-bottoming-6h-hss","title":"Osg 1987001 Spiral Flute Tap M12x1.75 Bottoming 6H Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1987001 is a spiral flute tap designed for cutting M12x1.75 metric coarse internal threads in a wide range of materials. It features a bottoming chamfer for threading holes to near-full depth, making it well suited for blind-hole applications where thread engagement close to the bottom of the bore is required. The tap is manufactured from high-speed steel with a steam oxide coating that reduces friction and helps resist built-up edge during cutting. With 3 flutes and a 50-degree helix angle, the spiral geometry evacuates chips up and out of the hole efficiently. Overall length is 3.375 inches. This is a right-hand tap producing right-hand threads to a 6H class of fit and D6 thread limit.\u003c\/p\u003e\u003cp\u003eThis tap is used in machining, maintenance, and repair applications across manufacturing, tooling, and field service environments. It is appropriate for threading aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The bottoming configuration is especially useful in CNC machining centers, manual mills, and drill press setups where shallow blind holes require maximum thread depth. Licensed machinists, toolmakers, and skilled maintenance mechanics are the primary users of this tool.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer allows threading to near-full depth in blind holes\u003c\/li\u003e\n\u003cli\u003e50-degree helix angle promotes efficient upward chip evacuation\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating reduces friction and extends tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003e6H class of fit and D6 thread limit for standard metric tolerance compliance\u003c\/li\u003e\n\u003cli\u003eRight-hand flute direction and right-hand thread for conventional tapping operations\u003c\/li\u003e\n\u003cli\u003eCompatible with aluminum, cast iron, and carbon steel workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting M12x1.75 metric coarse right-hand threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Suited for use with standard tap holders and tapping heads that accept a 0.367-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed in a properly sized tap holder or tapping chuck rated for the shank diameter before use. Always ensure the workpiece is securely fixtured and the spindle is aligned with the pre-drilled pilot hole before beginning the tapping cycle. For blind-hole applications, confirm hole depth is sufficient to accommodate both the tap chamfer length and the required thread engagement before starting. Use an appropriate cutting fluid for the workpiece material to maximize tool life and thread quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M12x1.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 6H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: D6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\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: Steam Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.375 inches (85.7 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 24.4 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.367 inches (9.32 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 48.99 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 6.985 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 11.1125 mm\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: 0.101 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 143\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: 1987001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744363118898,"sku":"1987001","price":96.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/08804c7c21a47aabe8f2b09fa77400b9.jpg?v=1788855914","url":"https:\/\/voomisupply.com\/products\/osg-1987001-spiral-flute-tap-m12x1-75-bottoming-6h-hss","provider":"Voomi Supply","version":"1.0","type":"link"}