Centerdrill Dimensions

Centerdrill Dimensions – Standard Type  


(scroll down for Bell
Type)


Size Body
Dia (A)
Drill
Dia (D)
Drill
Length (C)
OAL
(L)
00 1/8 0.025 0.030 1 1/8
0 1/8 1/32 0.038 1 1/8
1 1/8 3/64 3/64 1 1/4
2 3/16 5/64 5/64 1 7/8
3 1/4 7/64 7/64 2
4 5/16 1/8 1/8 2 1/8
5 7/16 3/16 3/16 2 3/4
6 1/2 7/32 7/32 3
7 5/8 1/4 1/4 3 1/4
8 3/4 5/16 5/16 3 1/2

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Bell Type

Size Body
Dia (A)
Drill
Dia (D)
Bell
Dia (E)
Drill
Length (C)
OAL
(L)
11 1/8 3/64 0.1 3/64 1 1/4
12 3/16 1/16 0.15 1/16 1 7/8
13 1/4 3/32 0.2 3/32 2
14 5/16 7/64 0.25 7/64 2 1/8
15 7/16 5/32 0.35 5/32 2 3/4
16 1/2 3/16 0.4 3/16 3
17 5/8 7/32 0.5 7/32 3 1/4
18 3/4 1/4 0.6 1/4 3 1/2