2014

SOONER OR LATER,
....YOU'LL NEED A
HOLE IN IT!

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HIGH SPEED STEEL
STEP DRILL BITS

     
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HIGH SPEED STEEL
STEP DRILL BITS

An ideal tool for electrical contractors, sheet metal workers, and auto mechanics.  Saves time by drilling different hole sizes with a single bit.  Each of these drill bits features cutting steps with progressively larger diameters for cutting the hole size you need. 

 

 
 
  • Use with steel, copper, brass, plastic, plexi- glass, and other materials.
     

  • Manufactured from high speed steel with double fluted ground cutting edge for long life

 
     
 
RECOMMENDED CUTTING SPEEDS:

SIZE

SPEED SIZE SPEED
1/8" - 3/8" 1200 RPM 3/8" - 1/2" 600 RPM
1/2" - 5/8" 400 RPM 5/8" - 3/4" 350 RPM
3/4" - 7/8" 300 RPM 7/8" - 1" 260 RPM
1" - 1-1/8" 240 RPM 1-1/8" - 1-1/2" 200 RPM
 
     
 
UB SERIES
HIGH SPEED STEEL - STEP DRILL BITS
PART
NUMBER
Minimum
SIZE
Maximum
SIZE
Number of
STEPS
SHANK
SIZE
Std
Package
UB1-1/8-1/2 1/8" 1/2" 13 1/4" 1
UB2-3/16-1/2 3/16" 1/2" 16 1/4" 1
UB3-1/4-3/4 1/4" 3/4" 9 3/8" 1
UB4-3/16-7/8 3/16" 7/8" 12 1/2" 1
UB5-7/8-1-1/8 7/8" 1-1/8"   1/2" 1
UB6-7/8-1-3/8 7/8" 1-3/8" 5 1/2" 1
UB7-9/16 9/16"   1 1/2" 1
UB8-3/16-1/2 3/16" 1/2" 6 1/4" 1
UB9-1/2-1 1/2" 1" 10 3/8" 1
UB10-7/8-1 7/8" 1" 2 1/2" 1
UB11-7/16-1-1/8 7/16" 1-1/8" 12 1/2" 1
 
     
 

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