{"product_id":"harvey-tool-dda2187-c4-carbide-drill-bit-7-32-in-130-deg","title":"Harvey Tool DDA2187-C4 Carbide Drill Bit 7\/32 in 130 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL DDA2187-C4 is a solid carbide jobber length drill bit designed for high-performance drilling in composite and aluminum materials. It features a 130-degree double angle point and a diamond-like carbon (DLC) coating that reduces friction and extends tool life in abrasive composite substrates. The bit measures 0.2187 inches (7\/32 inch) in diameter with an overall length of 3.94 inches and a flute length of 1.4972 inches. It is part of the Harvey Tool Miniature High Performance Drills series and is intended for use by machinists, composite fabricators, and precision manufacturing professionals.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for drilling aluminum and composite workpieces in light manufacturing, aerospace fabrication, and precision machine shop environments. The straight-cylindrical shank with a 0.2364-inch shank diameter is compatible with standard drill chucks and collet systems. The 6xD flute-to-diameter ratio supports chip evacuation in moderate-depth drilling operations. Right-hand spiral flutes are standard orientation for CNC and manual drilling setups. No coolant-through capability is present, so external coolant or air blast is the appropriate cooling method for composite drilling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in abrasive composite and aluminum materials\u003c\/li\u003e\n  \u003cli\u003e130-degree double angle point geometry optimized to reduce delamination and fiber pullout in composites\u003c\/li\u003e\n  \u003cli\u003eDLC (diamond-like carbon) coating reduces friction and heat buildup at the cutting edge\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, regular spiral flute for standard CNC and manual drilling applications\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard collet chucks and drill chucks\u003c\/li\u003e\n  \u003cli\u003eh6 diameter tolerance for close-tolerance hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in drilling aluminum and composite workpieces; part of the Harvey Tool Miniature High Performance Drills series for precision drilling in the 0.2000 to 0.2500 inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists in CNC machining centers or manual drill presses using a collet or drill chuck sized for the 0.2364-inch straight shank. Ensure the workpiece is securely fixtured before drilling to prevent walking or delamination at entry and exit. No coolant-through channels are present; use external air blast or cutting fluid appropriate for the workpiece material. Inspect the cutting edge for chipping before each use, as solid carbide is brittle and sensitive to interrupted cuts or side loading.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.2187 inches (7\/32 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.94 inches (100.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.4972 inches (38.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2364 inches (6.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\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\u003eCoating\/Finish\u003c\/strong\u003e: DLC (Diamond-Like Carbon)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.4972 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum, Composite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 6xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.09 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Miniature High Performance Drills\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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: DDA2187-C4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51749397201202,"sku":"DDA2187-C4","price":136.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/943ca55063ad05a3d136aa827b5e0e03_3774e11c-59c0-4360-a607-75ba3486177a.jpg?v=1788905561","url":"https:\/\/voomisupply.com\/products\/harvey-tool-dda2187-c4-carbide-drill-bit-7-32-in-130-deg","provider":"Voomi Supply","version":"1.0","type":"link"}