{"product_id":"guhring-9005570040000-spotting-drill-90-deg-4mm-hss","title":"Guhring 9005570040000 Spotting Drill 90 Deg 4mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005570040000 is a 90-degree spotting drill designed for precise center-starting of hole locations in metal and general-purpose machining applications. Built from high speed steel with a bright uncoated finish, this single-ended drill features a 4mm cutting diameter, 55mm overall length, and a 12mm spiral flute length. It is used to create accurate spot marks that guide subsequent twist drills, reducing walking and improving hole-location accuracy. The straight cylindrical shank seats cleanly in standard drill chucks and collet holders. This tool is suited for manual machining operations, CNC drilling setups, and production environments where consistent entry-point geometry is required.\u003c\/p\u003e\u003cp\u003eThis spotting drill fits general-purpose metal cutting scenarios in job shop, production, and maintenance repair environments. It is well suited for machinists and toolroom technicians working with steel, aluminum, and similar workpiece materials. The 90-degree point angle is a common standard that matches many countersink and spot-drill call-outs on engineering drawings. The right-hand cutting direction and two-flute spiral geometry support smooth chip evacuation during spotting operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e90-degree drill point angle for standard spot and center-drill geometry\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for general-purpose metal cutting durability\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for use with cutting fluids or dry cutting\u003c\/li\u003e\n\u003cli\u003eTwo spiral flutes with right-hand cut for efficient chip clearance\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank compatible with standard chucks and collet systems\u003c\/li\u003e\n\u003cli\u003eSingle-ended design in GUHRING Series 557\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose spotting drill for use in standard drill chucks and collet holders that accept a 4mm straight cylindrical shank, suitable for a wide range of manual and CNC machining setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Secure the straight shank firmly in a collet or drill chuck before operation and verify runout is within acceptable limits. Power down and lock out the machine spindle before changing or inspecting the tool. Observe applicable shop safety standards and manufacturer feed-and-speed recommendations for the workpiece material being drilled.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 4mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 55mm (2.1654 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 12mm (0.4724 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\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\u003eSingle\/Double Ended\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 557\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Spotting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GUHRING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9005570040000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51747496526130,"sku":"9005570040000","price":53.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2ae70446ac8a97b02034db4da1a57d3a.jpg?v=1788881333","url":"https:\/\/voomisupply.com\/products\/guhring-9005570040000-spotting-drill-90-deg-4mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}