{"product_id":"hertel-30014050-circuit-board-drill-bit-size-28-solid-carbide","title":"Hertel 30014050 Circuit Board Drill Bit Size 28 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 30014050 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and related small-diameter applications. Built to a wire gauge size 28 (0.1405 inches decimal), it features a 118-degree point angle and a fast spiral flute geometry that promotes efficient chip evacuation in tight, small-bore work. The bright, uncoated finish is standard for solid carbide tooling used where coating adhesion or contamination is a concern. At 1.5 inches overall length with a 0.75-inch flute, this bit is sized for benchtop drilling machines and CNC drill presses used by electronics fabricators and precision machinists.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for drilling cast iron, non-ferrous metals, and steel in addition to its primary circuit board application. The fast spiral and tapered web configuration make it effective in thin-material and multi-layer board stacks where clean entry and exit holes are critical. It is sold individually and is appropriate for shops, production lines, and field service technicians who require a single replacement bit without committing to a bulk quantity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and extended tool life in small-diameter drilling\u003c\/li\u003e\n\u003cli\u003eWire size 28 (0.1405 inches \/ 3.57 mm) decimal diameter for precise fit in circuit board drill patterns\u003c\/li\u003e\n\u003cli\u003e118-degree point angle for clean, accurate hole entry\u003c\/li\u003e\n\u003cli\u003eFast spiral flute with tapered web promotes chip clearance and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, bright uncoated finish compatible with standard drill chuck setups\u003c\/li\u003e\n\u003cli\u003e35-degree helix angle suited for cast iron, non-ferrous metals, and steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-use solid carbide circuit board drill bit for use with standard CNC and manual drill presses accepting a 0.1405-inch shank diameter. Rated for material applications including cast iron, non-ferrous metal, and steel.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by machinists and electronics fabricators in drill press or CNC drilling equipment. Ensure the spindle and collet or chuck are fully de-energized and at rest before inserting or removing the bit. Solid carbide tooling is brittle and susceptible to chipping if dropped or subjected to lateral load — handle with care during installation. Verify spindle runout and collet concentricity before use to protect the cutting edge and maintain hole-diameter tolerance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: 28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1405 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (mm)\u003c\/strong\u003e: 3.57 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1405 inches (3.57 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches (38.10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Fast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 35 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0005 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Cast Iron, Non-Ferrous Metal, Steel\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: 0.25 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: 30014050\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51732901855538,"sku":"30014050","price":28.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/969e6ee7462644a065cda18c6e3f180f.jpg?v=1788748499","url":"https:\/\/voomisupply.com\/products\/hertel-30014050-circuit-board-drill-bit-size-28-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}