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STC036-1, INCH SIZE COMBINED DRILLS & COUNTERSINKS ( CENTER DRILL )
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ANSI / ASME B94.11 M-1993
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PLAIN TYPE, 60° Angle, Ground
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Size
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Body Diameter
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Drill Diameter
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Overall Length
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Pict
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0
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1/8"
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1/32"
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1-1/8"
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1
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1/8"
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3/64"
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1-1/4"
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2
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3/16"
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5/64"
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1-7/8"
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3
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1/4"
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7/64"
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2"
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4
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5/16"
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1/8"
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2-1/8"
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4-1/2
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3/8"
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9/64"
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2-1/2"
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5
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7/16"
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3/16"
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2-3/4"
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6
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1/2"
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7/32"
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3"
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7
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5/8"
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1/4"
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3-1/4"
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8
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3/4"
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5/16"
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3-1/2"
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9
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7/8"
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11/32"
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3-5/8"
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10
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1"
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3/8"
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3-3/4"
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BELL TYPE, 60° / 120° Angle, Milled / Ground
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Pict
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Size
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Body Diameter
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Drill Diameter
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Overall Length
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11
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1/8"
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3/64"
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1-1/4"
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12
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3/16"
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1/16"
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1-7/8"
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13
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1/4"
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3/32"
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2"
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14
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5/16"
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7/64"
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2-1/8"
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15
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7/16"
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5/32"
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2-3/4"
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16
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1/2"
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3/16"
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3"
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17
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5/8"
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7/32"
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3-1/4"
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18
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3/4"
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1/4"
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3-1/2"
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19
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7/8"
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5/16"
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3-5/8"
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20
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1"
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3/8"
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3-3/4"
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STC037, INCH SIZE COMBINED DRILLS & COUNTERSINKS, Long Series
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PLAIN TYPE.
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Size
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Body Diameter
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Drill Diameter
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Overall Length
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60° Angle
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1A
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1/8"
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3/64"
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3"
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1B
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1/8"
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3/64"
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4"
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Pict
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1C
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1/8"
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3/64"
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5"
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1D
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1/8"
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3/64"
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6"
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2A
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3/16"
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5/64"
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3"
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2B
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3/16"
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5/64"
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4"
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2C
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3/16"
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5/64"
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5"
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2D
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3/16"
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5/64"
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6"
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3A
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1/4"
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7/64"
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3"
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3B
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1/4"
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7/64"
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4"
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3C
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1/4"
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7/64"
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5"
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3D
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1/4"
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7/64"
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6"
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4A
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5/16"
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1/8"
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3"
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4B
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5/16"
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1/8"
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4"
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4C
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5/16"
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1/8"
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5"
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4D
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5/16"
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1/8"
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6"
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5B
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7/16"
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3/16"
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4"
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5C
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7/16"
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3/16"
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5"
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5D
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7/16"
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3/16"
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6"
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6B
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1/2"
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7/32"
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4"
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6C
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1/2"
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7/32"
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5"
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6D
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1/2"
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7/32"
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6"
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7
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5/8"
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1/4"
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6"
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8
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3/4"
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5/16"
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6"
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