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Center Drills Type ‘A’ – 90°

  • This tool is designed with a smaller diameter drill bit for creating the pilot hole and a larger diameter countersink section for chamfering the hole’s edge.
  • This type of tool combines the functions of a drill and a countersink into one tool, allowing for the creation of both the pilot hole and the countersunk recess in a single operation.
Cat No Size Body Dia. (A) Drill Dia. (D) Overall Length (L)
GCD-2566 00 1/8" .025" 1-1/8"
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GCD-2567 0 1/8" 1/32" 1-1/8"
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GCD-2568 1 1/8" 3/64" 1-1/4"
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GCD-2569 2 3/16" 5/64" 1-7/8"
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GCD-2570 3 1/4" 7/64" 2"
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GCD-2571 4 5/16" 1/8" 2-1/8"
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GCD-2572 4-1/2 3/8" 9/64" 2-1/2"
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GCD-2573 5 7/16" 3/16" 2-3/4"
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GCD-2574 6 1/2" 7/32" 3"
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GCD-2575 7 5/8" 1/4" 3-1/4"
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GCD-2576 8 3/4" 5/16" 3-1/2"
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GCD-2577 9 7/8" 11/32" 3-5/8"
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GCD-2578 10 1" 3/8" 3-3/4"
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Cat No

GCD-2566, GCD-2567, GCD-2568, GCD-2569, GCD-2570, GCD-2571, GCD-2572, GCD-2573, GCD-2574, GCD-2575, GCD-2576, GCD-2577, GCD-2578

Size

00, 0, 1, 2, 3, 4, 4-1/2, 5, 6, 7, 8, 9, 10

Body Dia. (A)

1/8", 1/8", 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 7/8", 1"

Drill Dia. (D)

.025", 1/32", 3/64", 5/64", 7/64", 1/8", 9/64", 3/16", 7/32", 1/4", 5/16", 11/32", 3/8"

Overall Length (L)

1-1/8", 1-1/8", 1-1/4", 1-7/8", 2", 2-1/8", 2-1/2", 2-3/4", 3", 3-1/4", 3-1/2", 3-5/8", 3-3/4"

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