Used w/helmet, flyer's sph-4
An item of foamed plastic molded to conform to the contour of the inside of a helmet shell. It is designed to be permanently installed in the helmet to afford increased protection to the head from impact.
Classification: Military wearing apparel of all types and materials, including footwear and headwear
NSN 5996-01-500-1830
NSN 5920-01-258-1577
NSN 4140-01-548-2496
NSN 5950-00-397-9869
NSN 5996-01-283-5834
NSN 6150-00-436-0263
NSN 5855-00-631-4565
NSN 5855-01-400-1590
NSN 5915-01-120-5165
NSN 5965-00-391-0562
NSN 6105-01-269-8467
NSN 5895-00-285-6622