{"product_id":"hertel-72308422-chucking-reamer-size-42-cobalt-steel","title":"Hertel 72308422 Chucking Reamer Size 42 Cobalt Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 72308422 is a wire-size chucking reamer designed to finish-ream drilled holes to a precise diameter of 0.0935 inches (wire size 42). Manufactured from cobalt steel, this reamer offers increased heat and wear resistance compared to standard high-speed steel tooling, making it well-suited for harder workpiece materials and production environments where tool life is a priority. The straight flute geometry produces a clean, accurate bore finish. With a 3.0-inch overall length and a 0.75-inch flute length, this reamer is sized for small-diameter finishing work in metalworking and machining applications. It ships bright and uncoated, ready to use out of the box.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is intended for use in drill presses, lathes, and CNC machining centers where a straight-cylindrical shank is accepted by a collet, chuck, or reamer holder. The right-hand cutting direction is standard for conventional machining setups. Wire-size reamers in this range are commonly used in instrument manufacturing, aerospace component work, precision mechanical assemblies, and any application requiring a finished hole at the 0.0935-inch nominal diameter. The straight flute design is appropriate for through-holes and blind holes where chip evacuation is not a limiting concern.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt steel construction for improved heat resistance and tool longevity over standard HSS\u003c\/li\u003e\n\u003cli\u003eWire size 42 reamer diameter — 0.0935 inches nominal\u003c\/li\u003e\n\u003cli\u003e4-flute straight flute geometry for smooth, accurate hole finishing\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — no coating interference with tight tolerances\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank for compatibility with standard collets and chucks\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for conventional machine setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard chucking reamer for use in any machine tool accepting a straight-cylindrical shank in the applicable diameter range, including drill presses, lathes, and machining centers equipped with collet chucks or reamer holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eChucking reamers are installed and removed by a qualified machinist with the machine fully powered down and the spindle at a complete stop. Secure the straight-cylindrical shank firmly in a collet or chuck to minimize runout before use. Reamers should not be used to remove excessive stock — drilling to within a few thousandths of final size before reaming is standard practice. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Wire Size)\u003c\/strong\u003e: 42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.0935 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.0 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDowel Pin Reamer\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver\/Under Size Reamer\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\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: 72308422\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728781639986,"sku":"72308422","price":42.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/09858ac7a4699b50513997f6c7a95830_4c584c4e-b987-4677-9913-f3af7fce8e27.jpg?v=1788696160","url":"https:\/\/voomisupply.com\/products\/hertel-72308422-chucking-reamer-size-42-cobalt-steel","provider":"Voomi Supply","version":"1.0","type":"link"}