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Size
4#
Heavy
6#
Light
6#
Heavy
8#
Light
8#
Heavy
10#
Light
10#
Heavy
12#
Light
12#
Heavy
1/4
Light
1/4
Regular
1/4
Heavy
Nominal Size
PP
Head Blank Size(Ref.)
A max
min
B max
min
C max
min
D max
min
E max
min
G max
min
L max
min
0.1120 0.1380 0.1380 0.1640 0.1640 0.1900 0.1900 0.2160 0.2160 0.2500 0.2500 0.2500
40 32 32 32 32 24 and 32 24 and 32 24 24 20 20 20
AA AA A A B A B B C B C D
0.72 0.72 0.91 0.91 1.10 0.91 1.10 1.10 1.25 1.10 1.25 1.44
0.59 0.59 0.78 0.78 0.97 0.78 0.97 0.97 1.12 0.97 1.12 1.31
0.41 0.41 0.47 0.47 0.57 0.47 0.57 0.57 0.66 0.57 0.66 0.79
0.28 0.28 0.34 0.34 0.43 0.34 0.43 0.43 0.53 0.43 0.53 0.65
0.11 0.11 0.14 0.14 0.18 0.14 0.18 0.18 0.21 0.18 0.21 0.24
0.07 0.07 0.10 0.10 0.14 0.10 0.14 0.14 0.17 0.14 0.17 0.20
0.21 0.21 0.27 0.27 0.33 0.27 0.33 0.33 0.39 0.33 0.39 0.48
0.17 0.17 0.22 0.22 0.26 0.22 0.26 0.26 0.32 0.26 0.32 0.42
0.33 0.33 0.43 0.43 0.50 0.43 0.50 0.50 0.58 0.50 0.58 0.70
0.29 0.29 0.39 0.39 0.45 0.39 0.45 0.45 0.51 0.45 0.51 0.64
0.14 0.14 0.18 0.18 0.22 0.18 0.22 0.22 0.25 0.22 0.25 0.30
0.10 0.10 0.14 0.14 0.17 0.14 0.17 0.17 0.20 0.17 0.20 0.26
0.75 0.75 0.75 0.75 0.75 1.00 1.00 1.00 1.50 1.50 1.50 1.50
0.25 0.25 0.25 0.38 0.38 0.38 0.38 0.38 0.38 0.50 0.50 0.50
Size
5/16
Light
5/16
Regular
5/16
Heavy
3/8
Light
3/8
Regular
3/8
Heavy
7/16
Light
7/16
Heavy
1/2
Light
1/2
Heavy
5/8
Heavy
Nominal Size
PP
Head Blank Size(Ref.)
A max
min
B max
min
C max
min
D max
min
E max
min
G max
min
L max
min
0.3125 0.3125 0.3125 0.3750 0.3750 0.3750 0.4375 0.4375 0.5000 0.5000 0.6250
18 18 18 16 16 16 14 14 13 13 11
C D E D E F E F E F F
1.25 1.44 1.94 1.44 1.94 2.76 1.94 2.76 1.94 2.76 2.76
1.12 1.31 1.81 1.31 1.81 2.62 1.81 2.62 1.81 2.62 2.62
0.66 0.79 1.00 0.79 1.00 1.44 1.00 1.44 1.00 1.44 1.44
0.53 0.65 0.87 0.65 0.87 1.31 0.87 1.31 0.87 1.31 1.31
0.21 0.24 0.33 0.24 0.33 0.40 0.33 0.40 0.33 0.40 0.40
0.17 0.20 0.26 0.20 0.26 0.34 0.26 0.34 0.26 0.34 0.34
0.39 0.48 0.65 0.48 0.65 0.90 0.65 0.90 0.65 0.90 0.80
0.32 0.42 0.54 0.42 0.54 0.80 0.54 0.80 0.54 0.80 1.19
0.58 0.70 0.93 0.70 0.93 1.19 0.93 1.19 0.93 1.19 0.19
0.51 0.64 0.86 0.64 0.86 1.13 0.86 1.13 0.86 1.13 1.13
0.25 0.30 0.39 0.30 0.39 0.55 0.39 0.55 0.39 0.55 0.55
0.20 0.26 0.35 0.26 0.35 0.51 0.35 0.51 0.35 0.51 0.51
1.50 1.50 1.50 2.00 2.00 2.00 4.00 4.00 4.00 4.00 4.00
0.50 0.50 0.50 0.75 0.75 0.75 1.00 1.00 1.00 1.00 1.25

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