I.1. 1 This Standard contains complete general and
dimensional data for metric series hexagon socket
head cap screws in sizes from 1.6 mm to 48 mm and for
metric series spline socket head cap screws in sizes
from 1.6 mm to 8 mm recognized as American National
Standard, Also included are appendices covering
drill and counterbore sizes (Appendix I), drilled
head dimensions (Appendix II), formulas for dimensions
(Appendix III), IS0 dimensional variations (Appendix
IV), part numbering system and preferred sizes
for government use (Appendix V), and thread dimensions
(Appendix VI).
1.1.2 The inclusion of dimensional data in this
Standard is not intended to imply that all of the products
described are stock production sizes. Consumers
should consult with manufacturers concerning lists of
stock production sizes.