{"product_id":"guhring-9005490039000-jobber-drill-bit-3-9mm-hss","title":"Guhring 9005490039000 Jobber Drill Bit 3.9mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9005490039000 is a jobber length twist drill bit designed for precision hole-making in a range of workpiece materials. Built from high speed steel with a bright uncoated finish, this bit features a 130-degree split point and a parabolic flute geometry that promotes efficient chip evacuation and reduced cutting resistance. At 3.9 mm (0.1535 inches) in diameter with an overall length of 75 mm (approximately 2.97 inches), it fits standard drill chucks and is suited for use in hand-held drills, drill presses, and CNC machining centers. Licensed tradespeople and machining professionals working in production and maintenance environments will find this bit well-matched to high-throughput drilling tasks.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use in aluminum and similar non-ferrous and low-alloy materials, consistent with its K, N, and P workpiece material codes. Its parabolic flute design with a 5xD flute-to-diameter ratio supports drilling depths up to 37.15 mm (1.463 inches) without requiring peck cycles in most applications. The straight-cylindrical shank accepts standard drill chucks without adapters. It conforms to DIN 338 standards, making it a direct-fit option wherever that specification is called out on engineering drawings or maintenance sheets.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3.9 mm (0.1535 inch) diameter with tight tolerance of -0.018 to 0.000 mm for consistent hole sizing\u003c\/li\u003e\n  \u003cli\u003e130-degree point angle with web thinning for reduced thrust and cleaner entry\u003c\/li\u003e\n  \u003cli\u003eParabolic flute geometry promotes fast chip removal and reduced heat buildup\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides durability across a broad range of drilling speeds\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — suitable for use with cutting fluid or dry in compatible materials\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 338 specification for jobber length drill bits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 338 jobber length drill bit for use in standard drill chucks accepting straight-cylindrical shanks. Rated for aluminum and comparable non-ferrous and low-alloy workpiece materials (material codes K, N, P).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and operated by machinists, maintenance technicians, and metalworking professionals using standard drill chucks. Ensure the chuck is properly tightened and the workpiece is securely fixtured before drilling. Cutting fluid is recommended when drilling metals to extend tool life and maintain hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3.9 mm (0.1535 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 75 mm (2.97 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 43 mm (1.688 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 37.15 mm (1.463 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1535 inches (straight-cylindrical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 32 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\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\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright \/ Uncoated\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: Aluminum (K, N, P codes)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.018 to 0.000 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 338\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 549\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: High Performance\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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9005490039000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51747582312754,"sku":"9005490039000","price":19.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b0cc32bbfabda086aa6da6a41795d7ce.jpg?v=1788882876","url":"https:\/\/voomisupply.com\/products\/guhring-9005490039000-jobber-drill-bit-3-9mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}