{"product_id":"hertel-74130808-cobalt-screw-machine-drill-bit-size-28","title":"Hertel 74130808 Cobalt Screw Machine Drill Bit Size 28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 74130808 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials including alloy steels, stainless steel, and other hard metals. Built to Series HSCO135 standards, it features a 135-degree split point for fast penetration and reduced walking on startup without a center punch. The overall length is 1-15\/16 inches with a 15\/16-inch flute length, making it compact and rigid for short-reach drilling applications. Finished with a straw coating, this bit handles elevated heat generated during aggressive drilling cycles. It is sized to wire gauge Number 28, equivalent to 0.1405 inches in decimal diameter.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for use in machine shop environments, production drilling operations, and maintenance repair work where a short, rigid bit is required for accuracy in tight setups. The screw machine length profile reduces deflection compared to jobber-length bits, making it a common choice for drilling in drill presses, CNC machines, and turret lathes. Right-hand cutting direction and straight cylindrical shank allow direct chucking into standard drill chucks and collet holders.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction provides heat and wear resistance in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust force and eliminates center-punch requirement\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web design improves chip evacuation and cutting efficiency\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body increases rigidity and reduces bit deflection during drilling\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute with right-hand cutting direction for standard drilling applications\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank fits standard drill chucks and collet systems without modification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use cobalt drill bit for machine shop and production applications requiring a wire gauge Number 28 diameter in screw machine length format.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists and toolroom technicians using standard drill chucks or collet holders. Ensure the shank is fully seated and the chuck is tightened securely before operation. Use appropriate cutting fluid or coolant for the material being drilled to extend tool life, noting this bit does not support coolant-through delivery. Follow shop safety protocols including proper RPM selection for the bit diameter and material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: Number 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1405 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-15\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 15\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\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\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\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.09 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 74130808\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51741547757874,"sku":"74130808","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/590c61629e2ede862777aa6e78dc6c6d.jpg?v=1788832108","url":"https:\/\/voomisupply.com\/products\/hertel-74130808-cobalt-screw-machine-drill-bit-size-28","provider":"Voomi Supply","version":"1.0","type":"link"}