{"product_id":"hertel-89321053-screw-machine-drill-bit-letter-b-hss","title":"Hertel 89321053 Screw Machine Drill Bit Letter B Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 89321053 is a screw machine length drill bit sized to Letter B (0.2380 inches) with a 118-degree split point and a bright, uncoated high-speed steel construction. Screw machine length bits are shorter than jobber-length bits, which increases rigidity and reduces deflection during drilling operations. This geometry makes the 89321053 well suited for drilling in tight clearance areas and on automatic or semi-automatic screw machines where a compact, stiff tool path is critical. The right-hand cut and general-purpose grade make it a standard production tool for machinists and maintenance professionals working in metal fabrication, job shops, and industrial maintenance environments.\u003c\/p\u003e\u003cp\u003eThis bit is designed for general-purpose drilling in ferrous and non-ferrous metals, plastics, and similar materials. The screw machine length format is commonly used on turret lathes, CNC lathes, drill presses, and bench-top screw machines. Its compact overall length of 2.5 inches keeps the tool close to the chuck, reducing runout and improving hole accuracy in production drilling applications. Machinists working in high-volume metal cutting environments will find the standard bright finish appropriate for use with cutting fluids on most common workpiece materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter B sizing at 0.2380 inches for standard fractional and letter-size hole requirements\u003c\/li\u003e\n\u003cli\u003e118-degree drill point angle — a general-purpose geometry for use on a broad range of materials\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length design increases rigidity and reduces deflection compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides adequate hardness and toughness for production drilling at moderate speeds\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish is compatible with a wide range of cutting fluids and oils\u003c\/li\u003e\n\u003cli\u003eRight-hand cut for use in standard clockwise-rotating spindles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose screw machine length drill bit for use in standard drill chucks, turret lathes, CNC lathes, drill presses, and screw machines that accept Letter B diameter tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or maintenance professional familiar with rotating cutting tools. Ensure the spindle is fully stopped and the machine is de-energized or locked out before securing or removing the bit from the chuck. Use appropriate cutting fluid for the workpiece material to extend tool life and improve hole finish. Never exceed the recommended speed and feed for the workpiece material and tool diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2380 inches\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: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.2000 to 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\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: 89321053\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728902717746,"sku":"89321053","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0263046261fc9c0b3643786cd68f8aba.jpg?v=1788697554","url":"https:\/\/voomisupply.com\/products\/hertel-89321053-screw-machine-drill-bit-letter-b-hss","provider":"Voomi Supply","version":"1.0","type":"link"}