{"product_id":"hertel-66693508-drill-bit-letter-m-135-point-hss-tin","title":"Hertel 66693508 Drill Bit Letter M 135 Point Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 66693508 is a screw machine length drill bit sized at Letter M (0.2950 inches) and built for high-production drilling in metal and other hard materials. Constructed from heavy-duty high-speed steel (HSS) with a titanium nitride (TiN) coating, this bit delivers extended tool life and reduced friction compared to uncoated HSS. The 135-degree split point starts on contact without a center punch and reduces walking on flat or curved surfaces. With an overall length of 2.75 inches and a flute length of 1.5625 inches, the screw machine length profile fits close-quarters applications and automatic screw machine setups where a standard-length bit would not clear.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for use in CNC machining centers, turret lathes, automatic screw machines, and hand-held or bench drill press applications where tight clearances require a shorter tool. The straight-cylindrical shank at 0.2950 inches diameter seats directly in standard drill chucks and collet holders without adapters. The TiN coating makes it particularly effective on steel, cast iron, aluminum, and similar metals encountered in production shop and maintenance settings. A right-hand cut, regular spiral with web-thinned parallel web geometry promotes efficient chip evacuation and reduces thrust in deeper holes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter M size: 0.2950 inches diameter for precise fractional sizing\u003c\/li\u003e\n\u003cli\u003e135-degree split point starts on contact and reduces drill walking\u003c\/li\u003e\n\u003cli\u003eTiN coating extends tool life and lowers cutting friction\u003c\/li\u003e\n\u003cli\u003eHeavy-duty HSS construction handles interrupted cuts and hard materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web reduces thrust load during drilling\u003c\/li\u003e\n\u003cli\u003eScrew machine length (2.75 inches OAL) fits tight-clearance setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit drill bit for standard 3-jaw chucks and collet systems accepting a 0.2950-inch straight-cylindrical shank across drill presses, CNC turrets, and automatic screw machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and tool-and-die or maintenance personnel. Secure the shank fully in the chuck or collet before operation and confirm runout is within acceptable tolerance for the application. Power down and lock out the machine spindle before changing tooling. Avoid exceeding the recommended surface footage for HSS in the material being drilled, as overheating will degrade the TiN coating and reduce tool life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2950 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2950 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eTool Material\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.2500 to 0.3000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 66693508\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743220039986,"sku":"66693508","price":16.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/beb598235be1b294ef8b1838357d4968.jpg?v=1788844085","url":"https:\/\/voomisupply.com\/products\/hertel-66693508-drill-bit-letter-m-135-point-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}