{"product_id":"hertel-k007132as-spiral-point-sti-tap-1-2-13-unc-hss","title":"Hertel K007132AS Spiral Point Sti Tap 1\/2-13 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K007132AS is a spiral point STI tap designed for cutting Screw Thread Insert (STI) threads in a range of metalworking applications. Built from high-speed steel with a bright, uncoated finish, this plug-chamfer tap is sized for 1\/2-13 UNC thread form and carries an H4 thread limit for controlled fit tolerance. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping. At 3-13\/32 inches overall length with a 1-13\/16 inch thread length, this tap fits standard tap wrenches and machine holders used in production and maintenance environments. Machinists, tool and die workers, and maintenance technicians are the primary users.\u003c\/p\u003e\u003cp\u003eThis tap is applied wherever a 1\/2-13 UNC STI thread is required — typically in repair applications where a parent thread has been stripped or damaged and a helical coil insert will be installed to restore thread integrity. STI taps cut an oversized thread to accommodate the insert, and the finished assembly returns to standard 1\/2-13 UNC thread spec. The Helicoil reference number for this tap is 8CSA. Suitable for use in steel, cast iron, aluminum, and similar materials at appropriate cutting speeds for high-speed steel tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward, ideal for through-hole tapping\u003c\/li\u003e\n\u003cli\u003eSTI UNC thread form sized for helical coil insert installation\u003c\/li\u003e\n\u003cli\u003eH4 thread limit for consistent, controlled oversize tolerance\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides durability across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish compatible with standard cutting fluids\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (3-5 thread lead) for easy starting in through-hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in 1\/2-13 UNC STI thread applications requiring helical coil insert installation; Helicoil reference number 8CSA. Fits standard tap wrenches and machine tap holders accepting this shank size.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed by a qualified machinist or maintenance technician familiar with thread repair procedures. Always secure the workpiece and use the appropriate cutting fluid for the workpiece material before tapping. Ensure the correct tap drill size for the STI thread specification is used prior to tapping — using a standard UNC drill size will result in an incorrect thread form. Follow applicable shop safety practices and equipment lockout procedures when operating drilling or tapping machinery.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: STI UNC\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: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\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\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-13\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-13\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelicoil Reference Number\u003c\/strong\u003e: 8CSA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K007132AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51738271220018,"sku":"K007132AS","price":78.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a0cbaae99e49e7c3fdaea72fdb2c33c7.jpg?v=1788797454","url":"https:\/\/voomisupply.com\/products\/hertel-k007132as-spiral-point-sti-tap-1-2-13-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}