National Stock Number
8475-01-217-7421
National Stock Number (NSN) 8475-01-217-7421, or NIIN 012177421, (lining,helmet,shock absorbing) has an unknown assigned date. NIIN 012177421 was cancelled on September 19, 1999, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 28895. [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.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 8475012177421 does not contain precious metals.
This information was last updated on Jul 01, 2025.