Viking® Type 240-UB Letter R X 4 3/4" Nitro Carburize Hi-Molybdenum Tool Steel Ultra Bor Super Premium Heavy Duty Jobber Length Drill Bit With 3 7/16" Spiral Flute (6 Per Pack)
Airgas Part #: V0539630
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Viking® Type 240-UB Letter R X 4 3/4" Nitro Carburize Hi-Molybdenum Tool Steel Ultra Bor Super Premium Heavy Duty Jobber Length Drill Bit With 3 7/16" Spiral Flute (6 Per Pack)
Viking® Type 240-UB 4 3/4" Size R Letter Heavy Duty Ultra Bor Super Premium Jobber Length Drill Bit made of premium hi-molybdenum tool steel offers long lasting durability. Drill bit with 3 7/16" spiral flute has 135 deg split point for drilling work hardening stainless steel and tough material. Nitro carburized drill bit with low temperature stress relief enhances lubrication, toughness and is constructed according to NAS 907B specification. It is sold as 6 per pack.
Features
Special Hi-Molybdenum tool steel
Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance
Body and clearance are gold surface treated for maximum lubricity
Ultra Bor will substantially outperform cobalt drills in work hardening stainless steel and other tough drilling applications
Ultra cut super premium
Low temperature stress relief improves lubricity and toughness
Drills are heat treated at 2185° F and then nitro-carburize finished at 950° F to be measurably harder than high speed steel
Space age nitro-carburized steel withstands substantially higher drilling temperatures while maintaining sharpness
