{"product_id":"osg-6018300-hand-sti-tap-3-8-24-unf-h2-plug-chamfer","title":"Osg 6018300 Hand Sti Tap 3\/8-24 Unf H2 Plug Chamfer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 6018300 is a hand STI tap designed for cutting screw-thread inserts in 3\/8-24 UNF threads. STI taps cut an oversized thread profile that accepts helical thread inserts, restoring or reinforcing threaded holes in a wide range of base materials. This tap features a 4-flute geometry with a plug chamfer, which starts threading gradually and works well for through-holes. Built from high speed steel with a bright finish, it holds up under repeated use in shop and field applications. The H2 thread limit controls tolerance for a consistent fit with standard inserts. Thread length is 1.25 inches and overall length is 2.9375 inches.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for threading applications in aluminum, carbon steel, cast iron, and hardened steel. It is commonly used by machinists, maintenance technicians, and field service professionals repairing damaged or stripped threads. The plug chamfer and 4-flute design make it a practical choice for production and repair work on through-holes where insert installation is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-24 UNF thread size for fine-pitch STI insert applications\u003c\/li\u003e\n  \u003cli\u003eH2 thread limit for controlled tolerance and consistent insert fit\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for gradual thread engagement in through-holes\u003c\/li\u003e\n  \u003cli\u003e4 flutes for efficient chip removal and stable cutting action\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for durability across multiple materials\u003c\/li\u003e\n  \u003cli\u003eBright finish with no coating buildup, suitable for a wide range of cutting fluids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with helical thread inserts in 3\/8-24 UNF applications. Compatible base materials include aluminum, carbon steel, cast iron, and hardened steel.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSTI taps are installed by machinists or maintenance technicians using a standard tap wrench or machine spindle. Always secure the workpiece before tapping and use an appropriate cutting fluid for the base material. Back the tap out periodically to clear chips, especially in deeper holes. Follow applicable shop safety and tooling guidelines for speeds and feeds when using in a machine setup.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.9375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3810 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.2860 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\u003eCompatible Materials\u003c\/strong\u003e: Aluminum, Carbon Steel, Cast Iron, Hardened Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0067 pounds\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: 6018300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728887480626,"sku":"6018300","price":47.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9783a0c3ead11503794873c136c131fc.jpg?v=1788697409","url":"https:\/\/voomisupply.com\/products\/osg-6018300-hand-sti-tap-3-8-24-unf-h2-plug-chamfer","provider":"Voomi Supply","version":"1.0","type":"link"}