{"product_id":"heli-coil-2087-8-hand-sti-tap-m8-x-1-25-metric-coarse","title":"Heli-coil 2087-8 Hand Sti Tap M8 X 1.25 Metric Coarse","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELI-COIL 2087-8 is a hand STI tap designed to cut threads for Heli-Coil wire thread insert installation in M8 x 1.25 metric coarse applications. Manufactured from high speed steel with a bright finish, it features 4 flutes and a plug chamfer for controlled thread engagement from the start. The D3 thread limit and 5H class of fit maintain the oversized thread geometry required for proper insert seating. Thread length is 31.75 mm and overall length is 74.61 mm. Licensed machinists, maintenance technicians, and field service professionals use this tap when restoring damaged threads or creating new insert-ready threads in metal components.\u003c\/p\u003e\u003cp\u003eThis tap is suited for use in aluminum, magnesium, mild steel, and stainless steel workpieces. It is applied in thread repair operations where a Heli-Coil or compatible wire thread insert will be installed after tapping. Common applications include restoring stripped bolt holes in engine components, machinery housings, and structural assemblies across industrial, automotive, and mechanical maintenance trades. The plug chamfer style makes it appropriate for through-hole tapping as well as deeper blind-hole applications where there is sufficient clearance.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM8 x 1.25 metric coarse thread form with D3 thread limit for insert-ready oversized fit\u003c\/li\u003e\n\u003cli\u003e5H class of fit ensures correct geometry for wire thread insert installation\u003c\/li\u003e\n\u003cli\u003e4-flute design provides chip clearance and cutting stability across material types\u003c\/li\u003e\n\u003cli\u003ePlug chamfer allows use in both through-hole and blind-hole configurations\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles aluminum, magnesium, mild steel, and stainless steel\u003c\/li\u003e\n\u003cli\u003eBright finish with no coating buildup for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Heli-Coil STI wire thread insert systems in M8 x 1.25 metric coarse thread applications. Compatible material applications include aluminum, magnesium, mild steel, and stainless steel as stated by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or qualified maintenance technician should perform STI tapping operations. Secure the workpiece firmly before tapping and apply appropriate cutting fluid for the base material being threaded. Ensure the tap is aligned perpendicular to the workpiece surface to avoid cross-threading. Follow the insert manufacturer's instructions for drill size, tap depth, and insert installation sequence after tapping is complete.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M8 x 1.25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Metric Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: D3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 5H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 31.75 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 74.61 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 9.68 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 11.11 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 7.26 mm\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, Magnesium, Mild Steel, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: HELI-COIL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 2087-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52122978058546,"sku":"2087-8","price":29.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8fb508f42037f9c1be20aa2b1fa8efe8.jpg?v=1790085706","url":"https:\/\/voomisupply.com\/products\/heli-coil-2087-8-hand-sti-tap-m8-x-1-25-metric-coarse","provider":"Voomi Supply","version":"1.0","type":"link"}