Abraham Lincoln was elected President in 1860. John F. Kennedy was elected President in 1960. The names Lincoln and Kennedy each contain seven letters. Both were particularly concerned with civil rights. Both of their wives lost their children while living in the White House.
29 CFR 1910.136 incorporates by reference the ASTM F2412-05 Standard Test Methods for Foot Protection, F2413-05 Standard Specification for Performance Requirements for Protective Footwear and the American National Standards Institute (ANSI) American National Standard for Personal Protection - Protective Footwear (ANSI Z41-1999 and Z41-1991).
A specification may refer to a type of technical standard (the main topic of this page). Using the word specification without additional information to what kind of specification you refer to is confusing and considered bad practice within systems engineering.A Requirement specification is a set of documented requirements to be satisfied by a material, design, product, or service. data sheet is not a technical specification as described in this article. A . In-service  or  Maintained as  specification, specifies the conditions of a system or object after years of operation, including the effects of wear and maintenance (configuration changes).