{"product_id":"osg-1810500-hand-sti-tap-6-32-unc-h3-bottoming","title":"Osg 1810500 Hand Sti Tap 6-32 Unc H3 Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1810500 is a hand STI tap designed to cut Screw Thread Insert (STI) threads in tapped holes, producing an oversized internal thread that accepts helical coil inserts for thread repair or reinforcement. Built from high speed steel with a bright finish, this tap covers 6-32 UNC thread geometry at an H3 thread limit, which controls pitch diameter tolerance for consistent fit with standard STI inserts. The bottoming chamfer allows threading close to the bottom of blind holes. Overall length is 2 inches, with a thread length of 11\/16 inches and a shank diameter of 0.141 inches. Machinists and maintenance technicians use this tool in manual tapping operations on the bench or in the field.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for creating STI threads in a range of base materials including aluminum, carbon steel, cast iron, and hardened steel. It is most commonly applied in thread repair work where a damaged 6-32 UNC internal thread needs to be restored using a helicoil-style insert. The 3-flute geometry provides adequate chip clearance for through-hole and shallow blind-hole applications in these materials. The bottoming chamfer makes it the final step in a two-tap STI sequence when full thread depth near the bottom of a blind hole is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e6-32 UNC STI thread form for use with standard helical coil thread inserts\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer for threading to near full depth in blind holes\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit for controlled pitch diameter tolerance\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction handles aluminum, carbon steel, cast iron, and hardened steel\u003c\/li\u003e\n  \u003cli\u003e3-flute design provides chip clearance during hand tapping\u003c\/li\u003e\n  \u003cli\u003eBright finish, no coating  -  suitable for use with cutting oils and standard tapping fluids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in STI thread repair applications requiring a 6-32 UNC oversized internal thread to accept standard helical coil insert systems. Compatible with aluminum, carbon steel, cast iron, and hardened steel workpieces per OSG Series 126 specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed and operated by machinists or maintenance technicians using a standard tap wrench or T-handle. Before tapping, ensure the workpiece is securely fixtured and the correct STI drill size has been used for the 6-32 UNC insert diameter. Apply an appropriate cutting fluid for the base material to extend tool life and improve thread quality. As a bottoming tap, use it as the final pass after a plug or taper STI tap has started the thread in the blind hole.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 6-32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.6875 inches (11\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 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\u003eSquare Size\u003c\/strong\u003e: 0.110 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: Bright\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Carbon Steel, Cast Iron, Hardened Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 126\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: 1810500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743092408626,"sku":"1810500","price":37.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c0312ce635e3df7f0098f0e9b98f8afe.jpg?v=1788842579","url":"https:\/\/voomisupply.com\/products\/osg-1810500-hand-sti-tap-6-32-unc-h3-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}