{"product_id":"import-20870-i-mechanics-drill-bit-letter-i-hss-135","title":"Import -20870-I Mechanics Drill Bit Letter I Hss 135","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IMPORT -20870-I is a Letter I mechanics drill bit designed for general-purpose drilling in metal and ferrous materials. It is manufactured from high-speed steel with an oxide finish and features a 135-degree split point that reduces walking on contact and requires no center punch on most surfaces. The Weldon flat shank with three flats locks securely in compatible chuck styles to prevent slipping under torque. Overall length is 3.75 inches with a flute length of 2.25 inches. This bit is suited for production and maintenance drilling applications where consistent hole diameter of 0.272 inches is required.\u003c\/p\u003e\u003cp\u003eThis bit is intended for right-hand cutting in materials including carbon steel, cast iron, high alloy steel, high tensile strength alloy, stainless steel, and general steel stock. The mechanics length profile is shorter than a jobber bit, providing added rigidity in drill press and hand-drill applications where reduced deflection matters. The spiral flute with web-thinned, parallel web geometry helps clear chips efficiently during through-hole drilling. It is commonly used by machinists, maintenance technicians, and fabricators working with structural metals and plate stock.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces walking and eliminates center-punch step on most metal surfaces\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction with oxide coating for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eWeldon flat shank with three flats prevents chuck slippage under high torque\u003c\/li\u003e\n\u003cli\u003eMechanics length for increased rigidity and reduced deflection versus jobber length\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web improves chip evacuation in ferrous materials\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, spiral flute geometry for standard drilling operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose replacement mechanics drill bit for use in drill presses, milling machines, and hand drills equipped with Weldon flat-compatible chucks or collets accepting a Weldon shank profile.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by machinists or qualified maintenance technicians following applicable shop safety procedures. Ensure the drill press or machine is fully powered down and locked out before changing bits. Secure the Weldon shank firmly in the chuck with set screws engaged against the flats before operation. Do not exceed the recommended speed range for the workpiece material and bit diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: I\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2720 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\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\u003ePoint Type\u003c\/strong\u003e: Split Point\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\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\u003eOverall Length\u003c\/strong\u003e: 3.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.25 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 Material\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\u003ch4\u003eStandard Information\u003c\/h4\u003e\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-I\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51718311641394,"sku":"-20870-I","price":21.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c384944c0d355e1ea5a5ddd7be1c1c81.jpg?v=1788551914","url":"https:\/\/voomisupply.com\/products\/import-20870-i-mechanics-drill-bit-letter-i-hss-135","provider":"Voomi Supply","version":"1.0","type":"link"}