{"product_id":"hertel-53384392-cobalt-drill-bit-no-8-wire-135-point","title":"Hertel 53384392 Cobalt Drill Bit No. 8 Wire 135 Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 53384392 is a cobalt threaded shank drill bit designed for drilling into hard and abrasive materials where standard high-speed steel bits wear prematurely. It carries a No. 8 wire gauge size with a decimal equivalent of 0.1990 inches and features a 135-degree standard point angle that reduces walking and requires less feed pressure at startup. The 1\/4-28 threaded shank allows secure, repeatable mounting in compatible threaded-shank toolholders. An oxide coating is applied to the exterior to reduce friction and extend tool life during drilling operations. At 2.125 inches overall length, this bit is suited for confined-space applications where a shorter tool is needed.\u003c\/p\u003e\u003cp\u003eThis drill bit is used in metal fabrication, maintenance, and production drilling applications where cobalt-grade tooling is specified. It is appropriate for drilling stainless steel, high-strength alloys, cast iron, and other work-hardening materials. The threaded shank design is typically found in bench drill setups, CNC drilling heads, and specialty hand-tool holders that accept 1\/4-28 threaded shanks. Machinists, tool and die technicians, and industrial maintenance professionals commonly specify cobalt drill bits for these material types.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt drill bit material resists heat and wear in hard-metal drilling applications\u003c\/li\u003e\n\u003cli\u003e135-degree standard point angle reduces bit walking and cutting torque at entry\u003c\/li\u003e\n\u003cli\u003e1\/4-28 threaded shank provides positive, repeatable engagement in compatible holders\u003c\/li\u003e\n\u003cli\u003eOxide finish reduces friction between flute and workpiece during chip evacuation\u003c\/li\u003e\n\u003cli\u003eSpiral regular flute geometry with a 1.25-inch flute length supports consistent chip clearing\u003c\/li\u003e\n\u003cli\u003eShort 2.125-inch overall length suits tight-clearance drilling setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in toolholders and drilling systems that accept a 1\/4-28 threaded shank. Verify holder thread specification before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThreaded shank drill bits are installed and removed by a machinist or tooling technician using the appropriate threaded-shank holder for the 1\/4-28 thread specification. Always power down and lock out the drill press, CNC machine, or motor before changing tooling. Confirm the bit is fully seated and the holder is torqued to the holder manufacturer's specification before resuming operation. Inspect the cutting edges and shank threads for damage before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1990 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: Standard\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\u003eOverall Length\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Finish\/Coating\u003c\/strong\u003e: Oxide\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: 0.0218 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 20111614\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: 53384392\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749633360178,"sku":"53384392","price":15.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/af4dceb66de78348b2062117e42742ae.jpg?v=1788908595","url":"https:\/\/voomisupply.com\/products\/hertel-53384392-cobalt-drill-bit-no-8-wire-135-point","provider":"Voomi Supply","version":"1.0","type":"link"}