National Stock Number
4330-00-460-6942
National Stock Number (NSN) 4330-00-460-6942, or NIIN 004606942, (pneumatic muffler,exhaust-intake) was assigned January 9, 1970 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 7 manufacturer part numbers associated with this NSN. 2 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, 2 suppliers 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 Dec 10, 2014, 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 data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 37112. [A NOISE CONTROL/FILTERING DEVICE OF VARIOUS SIZES, SHAPES, DESIGNS, MATERIALS (METALLIC/NON-METALLIC) AND VARIED MOUNTING CONFIGURATIONS USED TO DIFFUSE AIR BLASTS, LOWERS AIR VELOCITY, REDUCE NOISE, FILTRATION OF AIRBORNE MOISTURE AND/OR DUST CONTAMINATION, PRESSURE EQUALIZATION, SPEED CONTROL FOR AIR OPERATED DEVICES. FOR VEHICULAR APPLICATION SEE MUFFLER, (AS MODIFIED).]. 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 4330004606942 does not contain precious metals.
This NSN is associated to Schedule B 8487900080: machinery parts not containing electrical features, and not specified or included elsewhere in chapter 84, except ships' propellers. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333999: all other miscellaneous general purpose machinery manufacturing.
This information was last updated on Jul 01, 2025.