drill blank
High Speed Steel Ground Drill Blanks are the same length as jobber length drills and hardened (RC 63-65) and parallel ground (no taper) to tolerances shown below. All blanks have a bright finish. They are used for the sizing of holes, stock for router bits, and other small tools, and can be used for gauges, drifts, punches, rollers, locating pins, and spindles, knockout pins, etc.
GROUND DRILL BLANKS
Fractional - 1/64 to 3/4 page 58
Wire Gauge - #1 to #80 page 58
Letter - A to Z page 59
GROUND DRILL BLANK SETS
Fractional Sizes
13 pc · 1/16 to 1/4 by 64ths page 59
15 pc · 1/16 to 1/2 by 32nds page 59
29 pc · 1/16 to 1/2 by 64ths page 59
Wire Gauge Size
60 pc · #1 to #60 page 59
20 pc · #61 to #80 page 59
Letter Sizes
26 pc · A to Z page 59
Combination
115 pc · #1-#60, A-Z, 1/16-1/2 by 64ths page 59
Tolerances and Manufacturing Notes
DRILL BLANK TOLERANCES
DIAMETER TOLERANCE
OVER UP HIGH LOW
  TO + -
#80 1/4 .0000 .0005
1/4 25/64 .0000 .0009
25/64 3/4 .0000 .0010
Blanks to tolerances other than listed may be made to special order. Blanks may be supplied with coned or square ends according to diameter or manufacturing method. If important, please check before ordering.