{"product_id":"value-collection-20870-z-letter-z-mechanics-drill-bit-hss","title":"Value Collection -20870-Z Letter Z Mechanics Drill Bit Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION -20870-Z is a Letter Z mechanics drill bit designed for drilling through ferrous metals and alloy steels in production and maintenance applications. The bit measures 0.4130 inches (Letter Z) in diameter with a 135-degree split point that reduces walking on contact and lowers the thrust needed to start a hole. The high-speed steel construction handles the heat generated in moderate-speed drilling operations. A three-flat Weldon shank provides positive drive engagement in compatible chuck holders, preventing slippage under torque. The oxide finish offers light corrosion resistance during storage and use.\u003c\/p\u003e\n\u003cp\u003eThis mechanics-length bit is suited for general-purpose drilling in job shop, fabrication, and maintenance-repair environments. The shorter overall length compared to jobber-length bits provides added rigidity when drilling in tight spaces or when using drill presses and milling machines. The right-hand spiral flutes evacuate chips efficiently from the cutting zone. The web-thinned, parallel-web configuration reduces cutting resistance, making this bit effective on carbon steel, cast iron, high alloy steel, high tensile strength alloys, and stainless steel workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter Z diameter — 0.4130 inches for precise hole sizing without conversion\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces drill walking and lowers feed pressure required\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction withstands heat generated in ferrous metal drilling\u003c\/li\u003e\n  \u003cli\u003eThree-flat Weldon shank prevents rotation in compatible holders under load\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web reduces cutting resistance on tough alloys and stainless steel\u003c\/li\u003e\n  \u003cli\u003eOxide finish provides light surface protection during storage and handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in drill presses, milling machines, and hand drills fitted with Weldon flat-shank compatible chuck holders. Suitable for drilling carbon steel, cast iron, high alloy steel, high tensile strength alloys, and stainless steel workpieces in general-purpose applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstalled by machinists, toolmakers, and maintenance mechanics. Secure the Weldon shank firmly in a matched holder to fully engage the drive flats before operation. Ensure the workpiece is clamped securely before drilling to prevent movement. Use appropriate cutting fluid or coolant for stainless steel and high alloy steel to extend tool life and maintain cut quality.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: Z\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.4130 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\u003eShank Type\u003c\/strong\u003e: Weldon Flat (3 Flats)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Mechanics\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Carbon Steel, Cast Iron, High Alloy Steel, High Tensile Strength Alloy, Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: -20870-Z\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695502328114,"sku":"-20870-Z","price":38.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed7aaee04d926586fe644fada6e35d16.jpg?v=1788335853","url":"https:\/\/voomisupply.com\/products\/value-collection-20870-z-letter-z-mechanics-drill-bit-hss","provider":"Voomi Supply","version":"1.0","type":"link"}