NSN 6625-00-643-8520, 6625006438520
Cancelled -> Replaced by 6625003024889

Federal Supply Classification: FSC 6625 - Electrical and Electronic Properties Measuring and Testing Instruments
National Item Identification Number: NIIN 006438520
Codification Country: United States
Item Name Code: INC 00314
Criticality: (Y) This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (P) There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 6625-00-643-8520

National Stock Number (NSN) 6625-00-643-8520, or NIIN 006438520, (cavity,tuned) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 2 stock numbers: 5840003722316, 6625003024889.

There are 4 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 2 suppliers are listed as Active suppliers 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.

This NSN is unique to one weapons system.

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: Not established. Not established.

This NSN is assigned to Item Name Code (INC) 00314. [AN INCLOSURE, WITH A CONDUCTIVE INNER WALL, WHOSE RESONANT FREQUENCY IS DETERMINED BY ITS INTERNAL DIMENSIONS. FOR CALIBRATED ITEMS WHICH ARE USED TO MEASURE WAVELENGTH OR FREQUENCY, SEE WAVEMETER; SEE ALSO FREQUENCY METER.]. This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 6625006438520 does not contain precious metals.

This NSN is associated to Schedule B 9030908030: parts and accessories of articles of schedule b subheading 9030.39. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334515: instrument manufacturing for measuring and testing electricity and electrical signals.

This information was last updated on Aug 01, 2025.