{"product_id":"hertel-76606722-cobalt-stub-drill-bit-no-27-135-point","title":"Hertel 76606722 Cobalt Stub Drill Bit No. 27 135 Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 76606722 is a cobalt stub-length drill bit designed for drilling into high-tensile strength metals. It carries a No. 27 wire gauge size, which corresponds to a decimal diameter of 0.144 inches, and features a 135-degree split point with web thinning for fast, self-centering starts without a center punch. The 1\/4-28 threaded shank interfaces with compatible quick-change holders used in aerospace and precision sheet-metal work. At 0.5625 inches overall length, this stub-length geometry provides maximum rigidity and minimizes deflection in tight-clearance drilling applications. Cobalt construction with an oxide coating improves heat and wear resistance compared to standard HSS bits.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for production drilling in stainless steel, titanium alloys, Inconel, and other hard or work-hardening metals where standard HSS tooling fails prematurely. The stub OAL and tapered web configuration reduce chatter on thin-gauge sheet and structural members. It meets NAS 965 Type D specification, making it appropriate for aerospace maintenance, military depot work, and precision fabrication shops where material traceability and dimensional compliance are required. Machinists and aircraft maintenance technicians are the primary users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNo. 27 wire gauge size  -  0.144 inch decimal diameter\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning for self-centering entry\u003c\/li\u003e\n  \u003cli\u003eCobalt construction with oxide coating for heat and wear resistance\u003c\/li\u003e\n  \u003cli\u003eStub-length OAL of 0.5625 inches for maximum rigidity and reduced deflection\u003c\/li\u003e\n  \u003cli\u003e1\/4-28 threaded shank for use with compatible quick-change drill holders\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 965 Type D specification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 1\/4-28 threaded quick-change shank systems. Rated for general-purpose drilling in high-tensile strength metals per NAS 965 Type D specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall into a compatible 1\/4-28 threaded shank holder and confirm secure engagement before use. Use appropriate cutting fluid or coolant when drilling hard alloys to extend tool life and maintain hole tolerance. Right-hand cutting direction  -  confirm drill press or hand drill is set to forward rotation. Follow applicable shop safety and PPE requirements when operating rotary cutting tools.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 27\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.144 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: 0.5625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.3125 inches (5\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Threaded Square\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\u003eBit Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\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\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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 76606722\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743888605490,"sku":"76606722","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f6bf436845a7cc321ed2a566c4a325c4.jpg?v=1788850812","url":"https:\/\/voomisupply.com\/products\/hertel-76606722-cobalt-stub-drill-bit-no-27-135-point","provider":"Voomi Supply","version":"1.0","type":"link"}