National Stock Number
5220-00-003-7556
National Stock Number (NSN) 5220-00-003-7556, or NIIN 000037556, (gage,comparator,air) was assigned May 26, 1972 in the Federal Logistics Information System (FLIS). NIIN 000037556 was cancelled on December 12, 2019, 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 is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 08, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 34715. [A GAGE DESIGNED TO COMPARE DIMENSIONAL CHARACTERISTICS BY INDICATING A DIFFERENCE IN AIR FLOW. THE GAGE IS CONNECTED TO AN EXTERNAL AIR SUPPLY, THE PRESSURE IS REGULATED AND RELEASED BETWEEN A GAGING MEMBER AND THE ITEM BEING CHECKED. A VARIATION IN SIZE, OR A DIFFERENCE IN SIZE FROM A MASTER, WILL BE INDICATED BY A DIFFERENCE IN AIR FLOW. IT CONSISTS OF A GAGING MEMBER, COMPARATOR, AIR PLUG, AN INDICATOR, AND MAY INCLUDE A PRESSURE REGULATOR. EXCLUDES:GAGE, AIR FLOW, METALIZING; GAGE, SMALL HOLE; AND GAGE SET, SMALL HOLE.]. 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 5220000037556 does not contain precious metals.
This information was last updated on Jul 01, 2025.