{"product_id":"hertel-83238931-screw-machine-drill-bit-letter-x-hss","title":"Hertel 83238931 Screw Machine Drill Bit Letter X Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 83238931 is a screw machine length drill bit sized to Letter X (0.3970 inches), designed for high-speed steel cutting applications in metal fabrication, machining, and general manufacturing environments. The 135-degree split point reduces walking at startup and requires less feed pressure than a standard 118-degree point. An oxide coating provides corrosion resistance and moderate lubricity. At 3-5\/16 inches overall length, this short-series bit fits tight-clearance fixtures and turret setups where a jobber-length bit would not clear. Licensed machinists, tool-and-die technicians, and production drill press operators are the primary users of this type.\u003c\/p\u003e\u003cp\u003eThis bit is suited for screw machine work, CNC turret drilling, drill press operations, and short-reach hand-drill applications where rigidity is more important than reach. The straight-cylindrical shank at 0.3970 inches diameter seats directly in standard drill chucks and collet systems. Its heavy-duty grade and web-thinned, parallel-web configuration make it appropriate for production drilling in ferrous and non-ferrous metals. It falls within the 0.3500 to 0.4000 inch decimal inch size range and meets NAS 907 specification requirements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter X size — 0.3970 inches decimal equivalent for precise sizing\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and self-centers on contact\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web lowers cutting resistance in metal stock\u003c\/li\u003e\n\u003cli\u003eOxide-coated high-speed steel resists corrosion and light heat buildup\u003c\/li\u003e\n\u003cli\u003eScrew machine (short-series) length improves rigidity in tight setups\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 specification for heavy-duty drill bit grade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use screw machine drill bit for standard drill chucks and collet holders accepting a 0.3970-inch straight-cylindrical shank. Suitable for use in drill presses, CNC turrets, and hand-held drilling equipment within the 0.3500 to 0.4000 inch size range category.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and remove drill bits only when the machine is fully de-energized and the chuck or collet is stationary. Ensure the shank is fully seated and the chuck is tightened before initiating a cut. Use appropriate cutting fluid for ferrous materials to extend bit life and maintain dimensional accuracy. Inspect the split point for chipping or wear before each use; a damaged point will affect hole quality and can break under feed pressure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: X\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3970 inches\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\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-15\/16 inches\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: 0.3970 inches\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\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\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\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\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: 83238931\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51730958844210,"sku":"83238931","price":17.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4b3c9909e32682cefcda030e95fa60c3.jpg?v=1788725304","url":"https:\/\/voomisupply.com\/products\/hertel-83238931-screw-machine-drill-bit-letter-x-hss","provider":"Voomi Supply","version":"1.0","type":"link"}