{"product_id":"guhring-9005520035700-screw-machine-drill-bit-size-28","title":"Guhring 9005520035700 Screw Machine Drill Bit Size 28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005520035700 is a stub-length (screw machine length) twist drill bit designed for high-throughput metal drilling in production and maintenance environments. Built from high-speed steel (HSS) with a bright uncoated finish, it carries a 130-degree cone-relief point that reduces thrust and improves chip ejection on entry. The parabolic flute geometry with web thinning promotes fast chip evacuation and helps prevent clogging in deep-feed applications. At 0.1406 inches in diameter (wire size 28, fractional equivalent 9\/64 inch) with a 2-1\/16 inch overall length, this bit is sized for close-tolerance hole work where a shorter flute column provides added rigidity.\u003c\/p\u003e\u003cp\u003eThis drill bit is engineered for cutting steel, aluminum, and other non-ferrous materials. The stub-length design makes it well suited for drill press work, CNC machining centers, and screw machine operations where reduced overhang improves accuracy and minimizes deflection. The parallel web configuration and 3xD flute-to-diameter ratio support consistent chip flow at moderate to aggressive feed rates. Licensed machinists, tool-and-die technicians, and production line maintenance personnel are the typical end users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e130-degree cone-relief point reduces entry thrust and self-centers on flat or curved stock\u003c\/li\u003e\n\u003cli\u003eParabolic fast-spiral flutes with web thinning for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStub length (screw machine length) provides greater rigidity and reduced deflection versus jobber-length bits\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks and collets without modification\u003c\/li\u003e\n\u003cli\u003eBright uncoated HSS finish suits general-purpose cutting in steel and non-ferrous alloys\u003c\/li\u003e\n\u003cli\u003eManufactured to DIN 1897 specification for consistent dimensional tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style screw machine length drill bit for use in drill presses, CNC machining centers, and screw machine setups requiring a straight-shank HSS stub drill in wire size 28 (0.1406 inch diameter).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or tool-and-die technicians. Secure the straight shank fully in a drill chuck or collet before operation and verify runout before beginning production cuts. Disconnect or lock out all machine power before changing or inspecting tooling per standard machine guarding practices. Do not exceed the maximum recommended drilling depth of 0.577 inches without retracting to clear chips.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Fractional)\u003c\/strong\u003e: 9\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal)\u003c\/strong\u003e: 0.1406 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Cone Relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 25\/32 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.577 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1406 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.2598 inches\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: Parabolic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Fast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Aluminum and Non-Ferrous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 552\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\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: 9005520035700\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51730799067442,"sku":"9005520035700","price":18.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2a998fad9b744a6fe0b4e015e6f14311.jpg?v=1788723040","url":"https:\/\/voomisupply.com\/products\/guhring-9005520035700-screw-machine-drill-bit-size-28","provider":"Voomi Supply","version":"1.0","type":"link"}