{"product_id":"precision-twist-drill-6001272-drill-bit-letter-d-hss","title":"Precision Twist Drill 6001272 Drill Bit Letter D Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 6001272 is a Letter D aircraft extension drill bit engineered for professionals who need extra reach in tight or deep-bore applications. Built from high-speed steel with an oxide finish, it features a 135-degree split point that is self-centering and reduces walking on entry, making it well suited for production drilling and field repair work. The spiral flute geometry with a web-thinned, tapered web configuration promotes efficient chip evacuation. At 6 inches overall length with a 2.75-inch flute length, this bit delivers the extended reach required for aircraft-style drilling tasks without sacrificing rigidity.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for use by machinists, aircraft maintenance technicians, and metalworking tradespeople drilling through steel, aluminum, and similar materials where a standard-length bit cannot reach. The 4xD flute-to-diameter ratio supports stable cutting in moderate-depth holes. Its straight cylindrical shank seats in standard drill chucks without adapters. The two-flute right-hand cutting configuration is appropriate for general-purpose through-hole and blind-hole drilling in metal fabrication, MRO, and structural repair scenarios.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter D (0.2460 inch) diameter with matching straight cylindrical shank diameter of 0.2460 inch\u003c\/li\u003e\n\u003cli\u003e135-degree split point is self-centering and reduces drill walk on hard surfaces\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web lowers thrust requirements and improves chip flow\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction with oxide finish for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003e6-inch overall length with 2.75-inch spiral flute for extended-reach applications\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B standards for aircraft-grade drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit suitable for use with standard drill chucks accepting a 0.2460-inch straight cylindrical shank in metalworking, MRO, and aircraft maintenance applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or maintenance technician familiar with cutting tool safety. Secure the workpiece fully before drilling and ensure the drill chuck is properly tightened on the shank. Use appropriate cutting fluid for the material being drilled to extend tool life and control heat. Follow applicable workplace safety standards and any relevant NAS or OEM maintenance manual procedures when performing aircraft structural work.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.2460 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.75 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2460 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length X Diameter Ratio\u003c\/strong\u003e: 4xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Centering\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered Web-Thinned\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: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 502-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 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: PRECISION TWIST DRILL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6001272\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51699052675378,"sku":"6001272","price":22.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0fc899d1bf6115334f340b397e07558e_e363ca58-1831-4da6-803e-33e91427ebd1.jpg?v=1788371719","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001272-drill-bit-letter-d-hss","provider":"Voomi Supply","version":"1.0","type":"link"}