{"product_id":"hertel-sdd43274745-step-drill-bit-hss-12-sizes","title":"Hertel SDD43274745 Step Drill Bit Hss 12 Sizes","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL SDD43274745 is a high-speed steel step drill bit designed for drilling multiple hole sizes with a single tool. It features a 3\/8 inch round shank with three flats to prevent slipping in the chuck. The bit covers 12 hole sizes ranging from 3\/16 inch minimum to 7\/8 inch maximum diameter, with a 1\/8 inch step length between each size. A bright uncoated finish is standard. This bit is suited for electricians, plumbers, HVAC technicians, and other tradespeople who need to punch clean, stepped holes through sheet metal, electrical enclosures, panels, and similar thin-material substrates.\u003c\/p\u003e\u003cp\u003eStep drill bits of this type are commonly used in electrical, HVAC, and plumbing rough-in work where multiple knockout sizes are required in a single session. The SDD43274745 is well matched to drilling sheet metal, junction boxes, electrical panels, conduit knockouts, and thin steel or aluminum plate. Its 12-step range reduces the need to swap bits when working through a range of conduit or fitting sizes in a single job.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12 hole sizes per bit, from 3\/16 inch to 7\/8 inch diameter\u003c\/li\u003e\n\u003cli\u003e1\/8 inch step length provides precise incremental sizing\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability on metal substrates\u003c\/li\u003e\n\u003cli\u003e3\/8 inch round shank with 3 flats prevents chuck slippage\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish for visual step identification\u003c\/li\u003e\n\u003cli\u003eSingle-bit solution reduces tool changes on multi-size knockout jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard 3\/8 inch or larger drill drivers and drill presses accepting a round shank with flats. Suitable for sheet metal, thin steel, aluminum, and similar thin-material applications common in electrical, HVAC, and plumbing trades.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eStep drill bits are installed by licensed electricians, HVAC technicians, and plumbers during rough-in and panel work. Always de-energize and lock out electrical panels before drilling enclosures or boxes. Use cutting fluid or lubricant on ferrous metal to extend bit life and reduce heat buildup. Apply steady, moderate pressure and avoid forcing the bit to prevent step damage or workpiece deformation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Hole Sizes\u003c\/strong\u003e: 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Hole Diameter\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Hole Diameter\u003c\/strong\u003e: 7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Round with Flats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Length\u003c\/strong\u003e: 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.19 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: SDD43274745\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51753345483058,"sku":"SDD43274745","price":103.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ce743a0768973903772d506c573eaa9a.jpg?v=1788935658","url":"https:\/\/voomisupply.com\/products\/hertel-sdd43274745-step-drill-bit-hss-12-sizes","provider":"Voomi Supply","version":"1.0","type":"link"}