{"product_id":"hertel-74130139-screw-machine-drill-bit-size-1-cobalt","title":"Hertel 74130139 Screw Machine Drill Bit Size 1 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74130139 is a screw machine length drill bit designed for high-production drilling in metal fabrication and machining applications. Built from cobalt tool steel with a titanium aluminum nitride (TiAlN) coating, this bit handles the heat and abrasion common when drilling hard metals, stainless steel, and high-temperature alloys. The 135-degree split point self-centers on contact, reducing the need for a center punch and minimizing walking on smooth surfaces. Overall length is 2-7\/16 inches with a 1-5\/16 inch flute length, making it compact enough for tight-clearance work in drill presses and CNC machines. This is a right-hand cutting, straight-cylindrical shank bit sized at 0.2280 inches (wire size 1).\u003c\/p\u003e\u003cp\u003eThis bit is suited for industrial and trade shops performing high-cycle drilling in ferrous and non-ferrous metals. The screw machine length profile keeps the bit rigid and reduces deflection during deep-feed operations, making it a common choice for production drilling, fixture work, and close-tolerance hole making. The TiAlN coating extends tool life in dry or minimal-lubrication cutting environments. Machinists, tool and die technicians, and industrial maintenance professionals will find this bit appropriate for both manual drill presses and CNC drilling operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt construction for elevated heat resistance in hard-metal drilling\u003c\/li\u003e\n\u003cli\u003eTiAlN coating extends tool life and reduces friction in dry cutting\u003c\/li\u003e\n\u003cli\u003e135-degree split point for self-centering and reduced thrust\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web for improved chip clearance and cutting efficiency\u003c\/li\u003e\n\u003cli\u003eScrew machine length profile minimizes deflection in high-feed applications\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute, straight-cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or production-grade bit for use in standard drill presses, CNC drilling centers, and hand-held drill motors accepting a straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and industrial maintenance technicians. Secure the straight shank firmly in a keyed or keyless chuck before operation and verify runout is within acceptable limits. Ensure the machine spindle is at a complete stop before changing bits. Follow applicable shop safety standards and equipment manufacturer guidelines for drill speed and feed rate selection based on workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2280 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: TiAlN\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-7\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-5\/16 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.24 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 74130139\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51751398539570,"sku":"74130139","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b4bfda014cbc4b68bbc9890f35b6be2e.jpg?v=1788923221","url":"https:\/\/voomisupply.com\/products\/hertel-74130139-screw-machine-drill-bit-size-1-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}