{"product_id":"hertel-83290452-cobalt-drill-bit-no-27-135-split-point","title":"Hertel 83290452 Cobalt Drill Bit No. 27 135 Split Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 83290452 is a cobalt threaded shank drill bit designed for drilling into high-tensile strength metals. Built to NAS 965 Type D specification, it features a 135-degree split point that reduces walking on entry and requires no center punch in most applications. The oxide coating adds surface hardness and provides basic corrosion resistance. With a wire gauge size of No. 27 and a decimal equivalent of 0.1440 inches, this bit fits applications requiring precision hole sizing. The web-thinned, tapered web construction reduces thrust force and improves chip evacuation. Installation is performed by licensed machinists, maintenance technicians, and metal fabricators.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for use in high-tensile strength metal applications including stainless steel, alloy steel, titanium, and similar hard metals where standard high-speed steel bits wear prematurely. The short overall length of 1.25 inches provides rigidity in tight spaces and reduces deflection during drilling. The 1\/4-28 threaded shank secures the bit in compatible quick-change or threaded drill chucks and fixtures common in aerospace, automotive, and industrial maintenance environments. Right-hand cutting with a regular spiral flute pattern handles a wide range of metal drilling tasks.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 27 wire gauge size — 0.1440 inch decimal equivalent for precision hole sizing\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces walking and lowers thrust force requirements\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web improves chip removal and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eCobalt construction with oxide coating for durability in high-tensile metals\u003c\/li\u003e\n\u003cli\u003eNAS 965 Type D specification compliance for aerospace and industrial use\u003c\/li\u003e\n\u003cli\u003e1\/4-28 threaded shank for secure retention in compatible quick-change systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in compatible 1\/4-28 threaded shank drill chucks and quick-change tooling systems; suited for general-purpose drilling in high-tensile strength metals per NAS 965 Type D specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or qualified maintenance technicians using appropriate drill press, hand drill, or CNC equipment. Verify chuck compatibility with the 1\/4-28 threaded shank before use. Secure the shank fully before applying power. Use appropriate cutting fluid when drilling hard or heat-sensitive alloys to extend bit life and control workpiece temperature.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 27\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1440 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.5625 inches (9\/16 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Thread Size\u003c\/strong\u003e: 1\/4-28\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish \/ Coating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: High-Tensile Strength Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 965 Type D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBit Type\u003c\/strong\u003e: Short\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: 83290452\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51733590769970,"sku":"83290452","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a02fed6d83511c6c3e90f31d2fffe926.jpg?v=1788756637","url":"https:\/\/voomisupply.com\/products\/hertel-83290452-cobalt-drill-bit-no-27-135-split-point","provider":"Voomi Supply","version":"1.0","type":"link"}