Military specification MIL-C-43549 covers a fully lined insulating helmet liner cap with adjustable forehead flap.

History

• 2000-12-18: MIL-DTL-43549 Revision D ^[1]
• 1989-06-23: Revision C
• 1987-04-03: Revision B Amdt. 2
• 1984-10-01: Revision B Amdt. 1
• 1983-01-21: Revision B
• 1980-02-22: Revision A Amdt. 1
• 1972-02-02: Revision A
• 1970-10-29: Amendment 1
• 1967-10-20

Notes

1. ↑ https://quicksearch.dla.mil/qsDocDetails.aspx?ident_number=23699