1/4 Dia. Solid Carbide Micro Long Flute Drill Bits,Straight Shank,Drilling Milling for Hardened Steels Iron Stainless Steel Aluminum (1/4 Dia-1.57 Max.Dp.-3.15 OAL)

1.Guaranteed Quality:Our solid carbide drills are subjected to rigorous quality control tests before leaving the factory. Each end mill is inspected under high magnification to ensure that it meets our stringent standards. 2.Solid carbide drill bits offer long tool life and faster drilling speeds than other substrates,but more brittle.Make sure work piece and machine are stable,use hydraulic chucks,high quality collet chucks,or shrink fit chucks. 3.Please adjust the speed,feed and drilling depth according to actual cutting conditions.Tool overhang,please use the required amount of minimum size,amount of long overhang is high vibration,turn it to lower the number of feed,when the tool overhang length is longer,please adjust the speed.feed and cutting depth. 4.Adapt to several kinds of cooling conditions, for example oil mist,water,oil,air cooling.can be used for dry machining.

• Durability and Heat Dissipation:High hardness tungsten steel material, capable of withstanding high-intensity drilling,Excellent chip removal enables high efficiency,The nano coating applied to these twist jobbers drill bits further enhances their resilience, providing superior heat dissipation even at high speeds.durability and perform optimally throughout the deep cavities drilling / fast drilling /O.D. milling / spotting / holemaking / threading / Slotting / Plunging / Form Milling / Roughing / CNC metalworking process.
• Precision design and manufacturing: it ensures dimensional accuracy and surface finish, and has good consistency in machined hole diameters. tolerance range of +0.005mm (+.0002"/-.0000".).h6 shank tolerance for high precision tool holders
• Wide material compatibility:Wide range of materials.Optimized for hardened steels,Aluminum alloys,Copper alloys,Brass and Bronze alloys,also used for High temp alloys,Stainless steels,Machining hardened steel,Free machining steels,Low/ Medium alloys steels,Carbon steels,alloy steels,cast iron,mould steels and more(up to 55HRC);
• High Speed & Smoothness:Special high performance Miniature drills offer improved chip evacuation and maximum rigidity.These drill bits offer improved chip evacuation and maximum rigidity. The double margin design contributes to exceptional hole accuracy and finish.
• Drill Size:1/4 Drill Dia.- 1.57'' Max Drill Dp.-3.15'' Overall Length (6.35mm Drill Dia.-40mm Max Drill Dp.-80mm Overall Lg).