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DFARS Specialty Metals
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Drill Bit Size Identifiers

Letter
Measure drill bit sizes with these identifiers.
For System of Measurement | For Use With | For Drill Bit Size | Wd. | Ht. | Thick. | Material | Color | Mounting Hole Dia. | Each | |
Letter | Drills | A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 0000000 | 000000 |
Center-Locating Punches for Unthreaded Holes

Fit these through existing holes and mark the center of the hole in a second workpiece.
Letter
Letter Size | Dia. Tolerance | Lg. | Punch Material | Grip Texture | Each | |
A | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 00000 |
B | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
C | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
D | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
E | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
F | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
G | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
H | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
I | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
J | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
K | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
L | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
M | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
N | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
O | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
P | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
Q | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
R | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
S | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
T | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
U | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
V | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
W | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
X | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
Y | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |
Z | -0.003" to -0.002" | 5" | Steel | Smooth | 00000000 | 0000 |