{"product_id":"value-collection-sm1500021-chucking-reamer-21-64-in-cobalt","title":"Value Collection SM1500021 Chucking Reamer 21\/64 in Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SM1500021 is a straight-shank chucking reamer designed to finish-ream drilled holes to a precise 21\/64 inch (0.3281 inch decimal) diameter. Constructed from cobalt steel, it handles harder workpiece materials and elevated cutting temperatures better than standard high-speed steel tooling. The 6-flute, right-hand spiral configuration promotes smooth chip evacuation and a consistent surface finish. With a 6 inch overall length and a 1-1\/2 inch flute length, this reamer is suited for bench drilling, radial drill press, and CNC work where accurate hole sizing is critical. It ships uncoated in a bright finish. Machinists, toolroom technicians, and maintenance mechanics are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis reamer is used in metalworking operations where drilled holes require final sizing to close tolerances. It fits straight-cylindrical chuck holders on drill presses, lathes, and CNC machining centers. Typical applications include sizing holes for dowel pins, bearings, and precision-fit fasteners in ferrous and non-ferrous materials. The cobalt steel construction makes it particularly well suited for stainless steel, cast iron, and other abrasion-resistant alloys that would rapidly wear standard HSS reamers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt steel construction resists heat and wear on hard or abrasive materials\u003c\/li\u003e\n  \u003cli\u003e6-flute right-hand spiral design for smooth chip flow and accurate finish\u003c\/li\u003e\n  \u003cli\u003e0.3281 inch (21\/64 inch) finished-hole diameter for precise sizing\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks and collet holders without adapters\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish — no coating buildup risk in tight-tolerance applications\u003c\/li\u003e\n  \u003cli\u003e6 inch OAL with 1-1\/2 inch flute length suits standard depth-of-cut requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose chucking reamer for use in any straight-cylindrical chuck or collet holder sized to accept the shank diameter, on drill presses, engine lathes, turret lathes, and CNC machining centers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eChucking reamers should be installed by a qualified machinist or toolroom technician. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation and verify runout with a dial indicator when tolerances are tight. Always apply cutting fluid appropriate to the workpiece material to extend tool life and improve surface finish. Pre-drill the hole to within 0.005 to 0.015 inch of finished size before reaming — do not use a chucking reamer to remove excess stock.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 21\/64 inch (0.3281 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Direction\u003c\/strong\u003e: Right Hand\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: 1.43 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SM1500021\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51722702651698,"sku":"SM1500021","price":36.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/09ddf2522afde9dd56b4371b93a97dec.jpg?v=1788594722","url":"https:\/\/voomisupply.com\/products\/value-collection-sm1500021-chucking-reamer-21-64-in-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}