The result: a “hard hat” for flight crews—the H-1 helmet for the Navy and P-1 for the Army Air Forces (forerunner of the Air Force)—that became standard-issue gear in 1947. “Take a ...

slick surfaces with a unique shell design that provides 24% more back-of-head coverage than standard Type I hard hats. Visit to learn how to put the North Force to work for your crew.