Dimensions of Round Head Fin Neck Bolts (Inch)
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Nominal Size
or Basic Bolt Diameter [Note (1)] |
Body Diameter, E
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Head Diameter, A
|
Head Height, H
|
Fin Thickness, M
|
Distance Across Fins,O
|
Fin Depth,P
|
|
Maximum Fillet
Radius, R [Note (2)] |
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Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
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No.10
|
0.19
|
0.199
|
0.182
|
0.469
|
0.438
|
0.114
|
0.094
|
0.098
|
0.078
|
0.395
|
0.375
|
0.088
|
0.076
|
0.031
|
1/4
|
0.25
|
0.182
|
0.469
|
0.594
|
0.563
|
0.145
|
0.125
|
0.114
|
0.094
|
0.458
|
0.438
|
0.104
|
0.094
|
0.031
|
5/16
|
0.313
|
0.469
|
0.438
|
0.719
|
0.688
|
0.176
|
0.156
|
0.145
|
0.125
|
0.551
|
0.531
|
0.135
|
0.125
|
0.031
|
3/8
|
0.375
|
0.438
|
0.114
|
0.844
|
0.782
|
0.208
|
0.188
|
0.161
|
0.141
|
0.645
|
0.625
|
0.151
|
0.141
|
0.031
|
7/16
|
0.438
|
0.114
|
0.094
|
0.969
|
0.907
|
0.239
|
0.219
|
0.192
|
0.172
|
0.739
|
0.719
|
0.182
|
0.172
|
0.031
|
1/2
|
0.5
|
0.094
|
0.098
|
1.094
|
1.032
|
0.27
|
0.25
|
0.208
|
0.188
|
0.833
|
0.813
|
0.198
|
0.188
|
0.031
|
GENERAL NOTE: For additional requirements, refer to section 2, General Data.
NOTES:
(1) Where specifying nominal size in decimals, zeros preceding decimal and in the four th decimal place shall be omitted.
(2) The minimum radius is one half of the value shown.