National Stock Number
6650-00-155-8331
National Stock Number (NSN) 6650-00-155-8331, or NIIN 001558331, (eyeshield,optical instrument) was assigned January 17, 1973 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 a year. There have been 11 contracts issued for this part number, with 11 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7L724V1426, SPE7L023V3618, SPE7L023V3618, SPE7L723V0775, SPE7L723V0775. The total value of the awarded contracts has been US$ 18,958.60.
This NSN is fairly common among different weapons systems, belonging to 24 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 31, 2013, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 22120. [A RESILIENT RUBBER ITEM, DESIGNED TO BE ATTACHED TO THE VIEWING APERTURE OF AN OPTICAL INSTRUMENT, TO MAINTAIN PROPER EYE DISTANCE AND TO PROTECT THE EYE(S) OF THE OBSERVER FROM STRAY LIGHT, WIND, AND/OR INJURY DUE TO SHOCK OF GUN FIRE OR SIMILAR DISTURBANCES. EXCLUDES:VISOR, PERISCOPE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6650001558331 does not contain precious metals.
This NSN is associated to Schedule B 9018500000: other ophthalmic instruments and appliances and parts and accessories. The Schedule B End Use is listed as medicinal equipment. NAICS classification category 339112: surgical and medical instrument manufacturing.
This information was last updated on Aug 01, 2025.