{"product_id":"precision-twist-drill-6001394-no-42-hss-extension-drill","title":"Precision Twist Drill 6001394 No. 42 Hss Extension Drill","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 6001394 is a No. 42 wire-size aircraft extension drill bit engineered for deep-reach drilling applications where standard-length bits cannot access the work area. Built from high speed steel with an oxide finish, this bit measures 12 inches in overall length with a 1.25-inch spiral flute. The 135-degree split point is self-centering and web-thinned, reducing walking on entry and lowering feed force on hard or layered materials. Two right-hand flutes evacuate chips efficiently during extended-reach operations. The straight-cylindrical shank measures 0.093 inches in diameter for secure chuck engagement.\u003c\/p\u003e\u003cp\u003eThis extension drill is suited for aerospace, sheet metal, and general fabrication work where access depth is a constraint. The aircraft extension designation makes it a common choice when drilling through structural assemblies, deep cavities, or stacked materials that standard jobber-length bits cannot reach. General-purpose tool performance ratings make it appropriate across a wide range of ferrous and non-ferrous base materials encountered in professional trade and production environments. It is sized to the No. 42 wire gauge standard, corresponding to a decimal diameter of 0.0935 inches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 42 wire size, 0.0935-inch cutting diameter for precision small-diameter work\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach into deep or restricted areas\u003c\/li\u003e\n\u003cli\u003e135-degree split point is self-centering and reduces thrust force on entry\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web configuration lowers drilling torque and improves chip clearance\u003c\/li\u003e\n\u003cli\u003eOxide finish on high speed steel body for basic wear and lubrication retention\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B standard for aircraft-grade drill bit performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit compatible with standard drill chucks and collets accepting a 0.093-inch straight-cylindrical shank, suitable for use in hand drills, drill presses, and pneumatic drilling equipment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by machinists, sheet metal mechanics, or qualified trade professionals familiar with small-diameter bit handling. Secure the straight-cylindrical shank fully in the chuck before operation and confirm the workpiece is clamped or fixtured. Small-diameter bits are susceptible to breakage under side load or misalignment — maintain axial alignment throughout the drilling stroke. Apply appropriate cutting fluid for the base material to extend bit life and improve hole quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.0935 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 12 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\u003eShank Diameter\u003c\/strong\u003e: 0.093 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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, Self-Centering\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, 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\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\u003eSeries\u003c\/strong\u003e: 501-12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\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: 6001394\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51716940300594,"sku":"6001394","price":28.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/da3496e4617881f200db3c68936287ae_ce88689f-5348-49e8-a8b1-10448147bda5.jpg?v=1788533689","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001394-no-42-hss-extension-drill","provider":"Voomi Supply","version":"1.0","type":"link"}