{"product_id":"hertel-74131129-cobalt-screw-machine-drill-bit-size-60","title":"Hertel 74131129 Cobalt Screw Machine Drill Bit Size 60","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 74131129 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials including stainless steel, high-temp alloys, and hardened steels. Built to wire gauge size 60 (0.0400 inches decimal), it features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The stub-length body  -  1.375 inches overall  -  provides rigidity in short-reach applications where standard-length bits would deflect. A web-thinned, parallel-web configuration improves chip evacuation and reduces thrust load. Two regular spiral flutes and a straight cylindrical shank make this bit compatible with standard drill chucks and quick-change holders. The straw finish indicates heat treatment and is left uncoated for direct use out of the box.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for precision drilling in metalworking, fabrication, and maintenance applications where a compact, rigid tool is required. The screw machine length profile is commonly used in CNC drilling, turret lathes, and bench-top drill press setups where clearance is limited. It is appropriate for drilling non-ferrous metals, carbon steel, and work-hardened materials where standard high-speed steel bits wear prematurely. Machinists, tool and die makers, and industrial maintenance technicians are the primary users of this style and size.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire gauge size 60 with 0.0400 inch decimal diameter for precision small-hole work\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and eliminates center-punch requirement on most surfaces\u003c\/li\u003e\n  \u003cli\u003eCobalt construction provides heat resistance for drilling stainless and high-temp alloys\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length of 1.375 inches overall for maximum rigidity and reduced deflection\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web improves chip flow and lowers cutting force\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting with regular spiral flutes and straight cylindrical shank for universal chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a screw machine length drill bit for use in standard drill chucks, CNC tool holders, and quick-change systems accepting a straight cylindrical shank in the 0.0000 to 0.1000 inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall the shank fully into the chuck and tighten securely before starting any drilling operation. Verify spindle speed is appropriate for the workpiece material and bit diameter before engaging the cut. Cobalt bits should not be used on wood or masonry, as this wastes the alloy's heat-resistance properties and does not improve cut quality. Secure the workpiece firmly to prevent movement, particularly when drilling small-diameter holes at high RPM.\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: 60\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0400 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 (Uncoated)\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: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.5 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 Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel\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\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.0000 to 0.1000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\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: 74131129\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743827722546,"sku":"74131129","price":43.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c8ef0892e0b1af67d5c285c1709124e3.jpg?v=1788850111","url":"https:\/\/voomisupply.com\/products\/hertel-74131129-cobalt-screw-machine-drill-bit-size-60","provider":"Voomi Supply","version":"1.0","type":"link"}