{"product_id":"hertel-sd63361729-step-drill-bit-9-step-1-4-to-3-4-in","title":"Hertel SD63361729 Step Drill Bit 9-step 1\/4 to 3\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL SD63361729 is a 9-step high-speed steel step drill bit designed for drilling multiple hole sizes with a single tool. Built from M2 HSS with a black oxide finish, it covers hole diameters from 1\/4 inch through 3\/4 inch in 1\/16-inch increments. The cylindrical shank measures 1\/4 inch in diameter and features two flats for secure chuck engagement. At 2-3\/16 inches overall length and 0.12 pounds, it is sized for compact access in panels, enclosures, and sheet metal. HVAC technicians, electricians, and plumbers use this bit when they need a range of hole sizes without swapping tools repeatedly.\u003c\/p\u003e\u003cp\u003eThis step drill bit is rated for general-purpose, multipurpose applications in thin materials including sheet metal, electrical panels, junction boxes, plastic enclosures, and light-gauge steel. It is well-suited for trade professionals who drill knockout holes for conduit, pipe stubs, or control wiring entry points during installation and service work. The straight flute geometry and black oxide coating help manage heat and chip clearance in these common trade scenarios.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e9 hole sizes from 1\/4 inch to 3\/4 inch in 1\/16-inch step increments\u003c\/li\u003e\n\u003cli\u003eM2 high-speed steel construction for durability in general-purpose drilling\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating reduces friction and provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003e1\/4-inch cylindrical shank with 2 flats for quick-change chuck compatibility\u003c\/li\u003e\n\u003cli\u003eStraight flute design aids chip evacuation in thin-material applications\u003c\/li\u003e\n\u003cli\u003eCompact 2-3\/16-inch overall length suits confined work areas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose step drill bit compatible with standard 3-jaw chucks and quick-change drill drivers accepting a 1\/4-inch cylindrical shank with flats.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eStep drill bits are typically used by electricians, HVAC technicians, and plumbers for cutting holes in sheet metal and thin panels. Always de-energize and lock out electrical panels before drilling near live components. Use a center punch to prevent bit walking on smooth metal surfaces. Apply light, consistent feed pressure to avoid overheating the cutting edges, and allow the bit to cool between extended use cycles.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (M2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Hole Sizes\u003c\/strong\u003e: 9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Hole Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Hole Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Increments\u003c\/strong\u003e: 1\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Length\u003c\/strong\u003e: 1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSTH-OX\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: SD63361729\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":67909339939122,"sku":"SD63361729","price":90.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1387a1cbc85e69f037e155e448d18e22_0db147db-4b20-43a1-8503-2b8e33eca249.jpg?v=1791186516","url":"https:\/\/voomisupply.com\/products\/hertel-sd63361729-step-drill-bit-9-step-1-4-to-3-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}