V® 05850 Heavy Duty Single End Ultra Bor Jobber Length Drill, 31/64 in Dia x 5-7/8 in L, Hi-Molybdenum Steel/HSS
V® Jobber Length Drill, Heavy Duty, Single End, Ultra Bor, Series: 240-UB, Super Premium, 31/64 in Dia, 5-7/8 in Overall Length, 4-3/8 in Cutting Depth, 2 Flutes, 4-3/8 in Flute Length, 31/64 in Shank, 135 deg Point, Split Point, Hi-Molybdenum Steel/HSS Cutting Edge, Hi-Molybdenum Steel/HSS, Nitro-Carburized, Applicable Materials: Hardening Stainless Steel and Cobalt Applicable
- Ultra Bor will substantially outperform cobalt drills in work hardening stainless steel and other tough drilling applications
- Low temperature stress relief improves lubricity and toughness
- The combination of hi-moly steel and nitro-carburized flutes allows the drill to have a thinner web compared to a cobalt drill
- Ultra Bor drill will penetrate the work hardening steel fast enough to continually cut beneath the chip which is hardening from deformation, meaning the drill is cutting softer material
- Features a flatter point to produce smaller chips, meaning all the torque is directed to a smaller area allowing for drilling of materials with a hardness over 30 on the Rockwell "C" scale
- The smaller chips also means the drill these drills run at cooler temperatures as there is less friction
- Body and clearance are gold surface treated for maximum lubricity
- Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance
- Space age nitro-carburized steel withstands substantially higher drilling temperatures while maintaining sharpness
- Drills are heat treated at 2185 deg F and then nitro-carburize finished at 950 deg F to be measurably harder than high speed steel