{"product_id":"precision-twist-drill-5997556-screw-machine-drill-bit","title":"Precision Twist Drill 5997556 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997556 is a screw machine length drill bit designed for high-performance drilling in cast iron and steel. Built from high speed steel with a bright, uncoated finish, it features a parabolic flute geometry that promotes fast chip evacuation and reduced heat buildup during extended cuts. The 135-degree split point provides aggressive self-centering entry without requiring a center punch, and the web-thinned, tapered web design reduces thrust force at the tip. At 3\/8 inch diameter and 3.125 inches overall length, this bit fits standard screw machine length applications where a shorter body improves rigidity and precision in tight setups.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for production drilling, maintenance, and repair operations in shop and field environments. The screw machine length format makes it a common choice on drill presses, CNC machines, and hand drills where a shorter bit reduces deflection. Primary workpiece materials are cast iron and steel, making it appropriate for HVAC, plumbing, and general metalworking trades that need reliable, repeatable hole quality in ferrous materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8 inch (0.3750 inch) diameter, screw machine length for increased rigidity\u003c\/li\u003e\n  \u003cli\u003e135-degree split point for self-centering entry without center punching\u003c\/li\u003e\n  \u003cli\u003eParabolic flute with 3xD flute-to-diameter ratio for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web reduces cutting thrust and tip wear\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction, bright\/uncoated finish, right-hand cut\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards; Series QC41P\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in cast iron and steel workpieces; fits any drill chuck or collet accepting a straight-cylindrical 3\/8 inch shank across standard drill presses, CNC equipment, and portable hand drills.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eA licensed or qualified machinist or tradesperson should select the correct cutting speed and feed rate for the workpiece material before use. Secure the workpiece firmly and ensure the chuck is tightened before drilling. Use appropriate cutting fluid or coolant where required by the application, even though this bit does not have through-coolant capability. Inspect the cutting edges for wear before each use and replace the bit if the point is chipped or the flutes are damaged.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.8125 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\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: QC41P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.083 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: PRECISION TWIST DRILL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5997556\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51720477999410,"sku":"5997556","price":26.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66bfabf0a9e7051fa8ae2655b5798bc2_f783a145-782b-4a58-8440-4509160ed840.jpg?v=1788564658","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997556-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}