National Stock Number
6640-00-494-3726
National Stock Number (NSN) 6640-00-494-3726, or NIIN 004943726, (bulb,pressure and circulating,la) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 4 stock numbers: 6640005300756, 6640000628401, 6640008936928, 6640003555411.
There are 8 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, 3 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 23168. [AN ITEM WITH A SUCTION VALVE AT ONE END AND A PRESSURE VALVE AT THE OTHER. IT IS USED FOR APPLYING AIR PRESSURE TO RESERVOIR SOLUTIONS AND WASHING BOTTLES; FOR FILLING BURETS; FOR CIRCULATING GASES OR LIQUIDS; OR FOR TAKING SAMPLES OF GASES. A SHORT LENGTH OF RUBBER TUBING MAY BE ATTACHED TO EITHER END.]. This item does not have a nuclear hardened feature or any other critical feature 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 6640004943726 does not contain precious metals.
This NSN is associated to Schedule B 7020009000: other articles of glass, nesoi. The Schedule B End Use is listed as mineral supplies-manufactured. NAICS classification category 327212: other pressed and blown glass and glassware manufacturing.
This information was last updated on Jul 01, 2025.