{"product_id":"guhring-9005490042000-jobber-drill-bit-4-2mm-hss","title":"Guhring 9005490042000 Jobber Drill Bit 4.2mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005490042000 is a jobber-length twist drill bit engineered for precision hole-making in a wide range of workpiece materials. Built from high-speed steel with a bright, uncoated finish, this bit features a parabolic flute geometry that promotes efficient chip evacuation and reduces heat buildup during drilling. The 130-degree split point angle improves centering and reduces walking on entry, eliminating the need for a center punch in most applications. At 75.00 mm (2.9531 inches) overall length with a 43.00 mm (1.6875 inches) flute length, it suits benchtop drill presses, CNC drilling, and hand-held power tools used by machinists and fabricators.\u003c\/p\u003e\u003cp\u003eThis drill bit is rated for primary use in aluminum, as well as non-ferrous and short-chipping ferrous materials, consistent with its K, N, and P material group designations. The web-thinned, tapered web construction reduces thrust load at the cutting tip, making it effective in materials where precise, clean entry holes are required. It is well suited for production shops, job site metalwork, and toolroom applications where consistent hole diameter tolerance is critical. The straight-cylindrical shank accepts standard drill chucks without adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eParabolic flute design for fast chip evacuation and reduced heat in deep-hole drilling\u003c\/li\u003e\n\u003cli\u003e130-degree drill point angle with web thinning for self-centering entry and lower thrust\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction rated for aluminum, non-ferrous, and compatible ferrous materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with cutting fluids or dry drilling\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without reduction sleeves\u003c\/li\u003e\n\u003cli\u003eManufactured to DIN 338 specification for consistent dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a DIN 338 Series 549 jobber-length drill bit for use in standard drill chucks accepting a 0.1654-inch straight shank. Rated for aluminum and compatible non-ferrous and ferrous workpiece materials per material group codes K, N, and P.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by machinists or qualified trade personnel familiar with rotating cutting tools and machine guarding requirements. Secure the shank fully in the chuck and verify runout before drilling. Power down and de-energize the drilling machine before changing bits. Do not exceed the recommended drilling depth of 36.70 mm (1.4450 inches) for this bit diameter without retracting to clear chips.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 4.20 mm (0.1654 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 75.00 mm (2.9531 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 43.00 mm (1.6875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 32.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 36.70 mm (1.4450 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\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1654 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum (K, N, P material groups)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\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: 9005490042000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51755917410610,"sku":"9005490042000","price":20.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/85c7d4736ccbb8ee9bdf04995cf487e3.jpg?v=1788961566","url":"https:\/\/voomisupply.com\/products\/guhring-9005490042000-jobber-drill-bit-4-2mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}