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Socket Flat Head Cap Screw Specifications

Socket Flat Head Cap Screw

Head and Body Dimensions
Nominal Max. Body Diameter Head Diameter Head Height Hex
Socket
Size
Diameter Max. Theoretical
Sharp
Min.
Absolute
Max.
Reference Min. Flushness
Tolerence
0 .0600 .0568 .138 .117 .044 .006 .035  
1 .0730 .0695 .168 .143 .054 .007 .050  
2 .0860 .0822 .197 .168 .064 .008 .050  
3 .0990 .0949 .226 .193 .073 .010 .062 1/16
4 .1120 .1075 .255 .218 .083 .011 .062 1/16
5 .1250 .1202 .281 .240 .090 .012 .078 5/64
6 .1380 .1329 .307 .263 .097 .013 .078 5/64
8 .1640 .1585 .359 .311 .112 .014 .094 3/32
10 .1900 .1840 .411 .359 .127 .015 .125 1/8
1/4 .2500 .2435 .531 .480 .161 .016 .158 5/32
5/16 .3125 .3053 .656 .600 .198 .017 .188 3/16
3/8 .3750 .3678 .781 .720 .234 .018 .219 7/32
7/16 .4375 .4294 .844 .781 .234 .018 .250 1/4
1/2 .5000 .4919 .938 .872 .251 .018 .312 5/16
5/8 .6250 .6163 1.188 1.112 .324 .022 .375 3/8
3/4 .7500 .7406 1.438 1.355 .396 .024 .500 1/2
7/8 .8750 .8647 1.688 1.604 .468 .025 .562 9/16
1 1.0000 .9886 1.936 1.841 .540 .028 .625 5/8
1-1/8 1.1250 1.1086 2.188 2.079 .611 .031 .750 3/4
1-1/4 1.2500 1.2336 2.438 2.316 .683 .035 .875 7/8
1-3/8 1.3750 1.3568 2.688 2.553 .755 .038 .875 7/8
1-1/2 1.5000 1.4818 2.938 2.791 .827 .042 1.000 1