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
Don't see what you're looking for JUST CALL
800-327-8611 AND ASK.
