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ASME B18.5 Round Head Fin Neck Bolts
Dimensions of Round Head Fin Neck Bolts (Inch) |
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Nominal Size or Basic Bolt Diameter [Note (1)] |
Body Diameter, E |
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 |
0.4375 |
0.452 |
0.421 |
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.
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.
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