{"product_id":"import-20870-w-letter-w-mechanics-drill-bit-hss","title":"Import -20870-W Letter W Mechanics Drill Bit Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IMPORT -20870-W is a Letter W mechanics drill bit designed for general-purpose metal drilling in professional and industrial settings. Built from high-speed steel (HSS) with an oxide finish, it features a 135-degree split point and web-thinned tip geometry that reduces walking on entry and lowers the thrust needed to start a hole. The Weldon flat shank with three flats locks securely in compatible chuck holders, preventing slippage under load. At 0.386 inches in diameter and 4.3125 inches overall length, this bit is a standard choice for machinists, maintenance mechanics, and fabricators working in production or repair environments.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for right-hand cutting in carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel stock. The mechanics-length body keeps the bit rigid in close-quarters drilling applications on fixtures, weldments, and machine frames where a jobber-length bit would flex or chatter. The spiral flute design clears chips efficiently during through-hole and blind-hole drilling in both manual drill presses and CNC setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter W diameter — 0.386 inches — for standard fractional and lettered hole sizing\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces thrust and eliminates center-punch requirement on most metals\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles intermittent heat buildup in production drilling\u003c\/li\u003e\n  \u003cli\u003eWeldon flat shank with three flats prevents rotation in set-screw chuck holders\u003c\/li\u003e\n  \u003cli\u003eOxide coating provides light corrosion resistance and reduces friction during cutting\u003c\/li\u003e\n  \u003cli\u003eParallel web and regular spiral flute geometry optimize chip evacuation in ferrous materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose replacement or stock drill bit for use in drill presses, milling machines, and hand-held drilling equipment fitted with Weldon-compatible chuck holders or end-mill holders accepting a 3-flat shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, tool-and-die workers, or maintenance mechanics. Secure the Weldon shank fully into the holder and tighten all set screws against the flats before operation. Ensure the workpiece is clamped or fixtured — never hand-hold metal stock during drilling. Coolant or cutting oil is recommended when drilling stainless steel or high alloy steel to extend tool life, as this bit does not have through-coolant capability.\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: W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.3860 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 Point\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\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 3\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\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\u003eOverall Length\u003c\/strong\u003e: 4.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.75 inches\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, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: IMPORT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: -20870-W\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51704874860850,"sku":"-20870-W","price":34.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fcbf00901459d393c043c927eaead119.jpg?v=1788425508","url":"https:\/\/voomisupply.com\/products\/import-20870-w-letter-w-mechanics-drill-bit-hss","provider":"Voomi Supply","version":"1.0","type":"link"}