{"product_id":"eagle-cutting-tool-cs-3750-100-6-i-hss-countersink-6-flute","title":"Eagle Cutting Tool CS-3750-100-6-I Hss Countersink 6 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EAGLE CUTTING TOOL CS-3750-100-6-I is a high-speed steel (HSS) countersink designed for producing clean, chamfered seat holes in metal, wood, and composite materials. The tool features a 3\/8-inch cutting diameter, a 100-degree included angle, and six flutes for smooth chip evacuation and a chatter-resistant cut. The 1\/4-inch straight shank fits standard drill chucks and quick-change holders without adapters. Machinists, fabricators, and metalworking tradespeople rely on this style of countersink for deburring and seating flat-head fasteners to flush or below-flush depth.\u003c\/p\u003e\n\u003cp\u003eThis countersink is suited for production and maintenance applications where a consistent 100-degree chamfer is required. The 100-degree angle is a common specification for metric and certain aerospace-style flat-head fasteners, distinguishing it from the more common 82-degree and 90-degree countersinks used in standard inch-fastener work. It is appropriate for use in drill presses, CNC machining centers, and hand-held electric drills when a drill press stop or depth collar is used to control depth.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e100-degree included angle seats metric and specialty flat-head fasteners correctly\u003c\/li\u003e\n  \u003cli\u003eSix-flute design reduces chatter and produces a smoother finish than single- or three-flute countersinks\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch cutting diameter sized for common small to medium fastener heads\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch straight shank compatible with standard drill chucks and quick-change systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard straight-shank countersink compatible with any drill press, milling machine, or hand drill accepting a 1\/4-inch shank toolholder or chuck.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed by a machinist or fabricator into a 1\/4-inch drill chuck or quick-change holder. Ensure the machine spindle is fully stopped and power is disconnected or the chuck key is removed before inserting or removing the tool. Use a depth stop collar or CNC depth parameter to prevent over-countersinking, which can weaken the workpiece around the fastener seat. Do not exceed the recommended RPM range for HSS tooling in the material being machined.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 100 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: EAGLE CUTTING TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CS-3750-100-6-I\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EAGLE CUTTING TOOL","offers":[{"title":"Default Title","offer_id":51233747960114,"sku":"CS-3750-100-6-I","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307622189.png?v=1780108232","url":"https:\/\/voomisupply.com\/products\/eagle-cutting-tool-cs-3750-100-6-i-hss-countersink-6-flute","provider":"Voomi Supply","version":"1.0","type":"link"}