|
Dimensions of Step Bolts (Inch)
|
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|
Nominal Size
or Basic Bolt Diameter [Note (1)] |
Body Diameter, E
|
Head Diameter, A
|
Head Height, H
|
Square Width,O
|
Square Depth,P
|
Maximum Corner
Radius on Square,Q |
Maximum Fillet
Radius, R [Note (2)] |
||||||
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
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|
No.10
|
0.19
|
0.199
|
0.182
|
0.656
|
0.625
|
0.114
|
0.094
|
0.199
|
0.185
|
0.125
|
0.094
|
0.031
|
0.031
|
|
1/4
|
0.25
|
0.26
|
0.237
|
0.844
|
0.813
|
0.145
|
0.125
|
0.26
|
0.245
|
0.156
|
0.125
|
0.031
|
0.031
|
|
5/16
|
0.313
|
0.324
|
0.298
|
1.031
|
1
|
0.176
|
0.156
|
0.324
|
0.307
|
0.187
|
0.156
|
0.031
|
0.031
|
|
3/8
|
0.375
|
0.388
|
0.36
|
1.219
|
1.188
|
0.208
|
0.188
|
0.388
|
0.368
|
0.219
|
0.188
|
0.047
|
0.031
|
|
7/16
|
0.438
|
0.452
|
0.421
|
1.406
|
1.375
|
0.239
|
0.219
|
0.452
|
0.431
|
0.25
|
0.219
|
0.047
|
0.031
|
|
1/2
|
0.5
|
0.515
|
0.483
|
1.594
|
1.563
|
0.27
|
0.25
|
0.515
|
0.492
|
0.281
|
0.25
|
0.047
|
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.