Viking Drill and Tool St. Paul MN
America's Finest High-Speed Steel Cutting Tools™

Proudly Manufactured in the USA
 PRODUCT CATALOG >> Type XGT-J Metric Cobalt DIN 338 Length

Metric Cobalt 338 DIN Length

Type XGT-J M42 Cobalt Metric DIN 338 Length – 135° Split Point
Type XGT-J Metric Cobalt DIN 338 Length


Heavy–duty wide land parabolic.
— Allows deep hole drilling without drill retraction.
— OAL & Flute length of DIN 338 Length drill are shorter than an inch Jobber drill.
— Manufactured from M42 HSS containing 8–percent cobalt.
Recommended for wide range of steels, castings & other hard metal
     drilling application.
Proudly manufactured in the USA.


Adobe Acrobat Logo PDF — Type XGT-J Metric Cobalt DIN 338 Length

 


 Profile of flute (Groove Profile)
Profile of flute promotes chip absorption and removal

Due to its function as a channel system, the profile of flute promotes chip absorption and removal. The wider the groove profile, the better the chip absorption and removal.
Poor chip removal means a higher heat development, which in return can lead to annealing & ultimately to breakage of the twist drill.
Wide groove profiles are flat, Thin groove profiles are deep. The depth of the groove profile determines the thickness of the drill core. Flat groove profiles allow large (thick) core diameters. Deep groove profiles allow small (thin) core diameters.