National Stock Number (NSN) 5930-00-450-3271, or NIIN 004503271, (switch,proximity) was assigned September 14, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 11 manufacturer part numbers associated with this NSN. 9 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 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.
This NSN is unique to one weapons system.
There has been very little 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 Nov 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) 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) 35487. [A SWITCH DESIGNED TO PERFORM THE FUNCTION OF OPENING AND/OR CLOSING ONE OR MORE ELECTRICAL CIRCUITS. THE SWITCHING FUNCTION IS ACCOMPLISHED BY MEANS OF SEPARABLE CONTACTS, SEMICONDUCTOR DEVICES, OR A COMBINATION OF SEPARABLE CONTACTS AND SEMICONDUCTOR DEVICES. THE ITEM FUNCTIONS IN RESPONSE TO ELECTRICAL CHANGES IN ITS INTERNAL CIRCUIT CAUSED BY CAPACITANCE, INDUCTANCE, OR MAGNETIC FLUX CHANGES. IT IS ACTIVATED BY PERMANENT MAGNETS, METALLIC MATERIALS, OR NONMETALLIC MATERIALS WHICH COME WITHIN ITS SENSING RANGE. FOR SENSING SWITCHES WHICH RESPOND TO CHANGES OTHER THAN CAPACITANCE, INDUCTANCE, OR MAGNETIC FLUX, SEE SWITCH, AIRFLOW; SWITCH, CENTRIFUGAL; SWITCH, INERTIA; SWITCH, PRESSURE; SWITCH, PRESSURE-THERMOSTATIC; SWITCH, THERMOSTATIC; AND SWITCH, TILT.]. 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 5930004503271 contains an unknown precious metal.
This NSN is associated to Schedule B 8536509065: switches, for a voltage not exceeding 1000 volts, nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335931: current-carrying wiring device manufacturing.
This information was last updated on Aug 01, 2025.