{"product_id":"heli-coil-03csb-spiral-point-sti-tap-3-48-unc","title":"Heli-coil 03CSB Spiral Point Sti Tap 3-48 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL 03CSB is a spiral point STI tap designed for cutting threads in pre-drilled holes that will accept HELI-COIL wire thread inserts. Manufactured from high-speed steel with a bright, uncoated finish, this tap produces a 3-48 UNC thread form to the STI standard, which requires an oversized hole to accommodate the installed insert. With a plug chamfer and H1 thread limit, it is suited for threading through-hole applications in moderate-to-hard materials. Machining professionals and maintenance technicians install this tap wherever stripped or weak threads need permanent repair or original-equipment thread-insert installation.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in thread repair and new-construction threading operations where a 3-48 UNC wire thread insert will be installed. It is appropriate for light-duty fastener applications found in precision assemblies, electronics enclosures, instrument housings, and thin-section metal components. The 2-flute spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for tapping blind or through holes in production and field-repair environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSTI UNC thread standard sized for HELI-COIL wire thread insert installation\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer allows starting in a through hole without requiring a bottoming or taper lead\u003c\/li\u003e\n  \u003cli\u003eH1 thread limit ensures controlled tolerance for proper insert fitment\u003c\/li\u003e\n  \u003cli\u003e2-flute spiral point design pushes chips forward to clear the cutting zone\u003c\/li\u003e\n  \u003cli\u003e3B class of fit delivers standard commercial thread accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with HELI-COIL wire thread inserts requiring a 3-48 UNC STI-tapped hole. Intended for use wherever a 3-48 UNC thread insert installation is specified in a through-hole or blind-hole application.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eA licensed machinist or maintenance technician should install this tap using a properly sized STI drill to prepare the hole before tapping. Always secure the workpiece and use appropriate cutting fluid to extend tap life and improve thread quality. Follow the thread insert manufacturer's torque and installation procedures for the wire insert after tapping. Deburr and clean the tapped hole before inserting the thread insert.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3-48\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: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\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: H1\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: 1.9375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1410 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.1100 inches\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: HELI-COIL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 03CSB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52102538690866,"sku":"03CSB","price":388.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b6e7af9c2cc8cb0c0326061579e7e831.jpg?v=1790070544","url":"https:\/\/voomisupply.com\/products\/heli-coil-03csb-spiral-point-sti-tap-3-48-unc","provider":"Voomi Supply","version":"1.0","type":"link"}