MSA454617 / 454617 HARDCAP SKULLGARD NATURAL TAN Skullgard® Protective Caps and Hats For use in heavy industries such as steel mills, where elevated temperatures are common, Skullgard® Caps and Hats feature heavy-duty construction. Choose Caps or Hats with Staz-On® or Fas-Trac® ratchet suspension. They all meet or exceed the ANSI Z89.1-2003. Class G Standard for a Type I (top impact) helmet.