National Stock Number
5970-00-557-4581
National Stock Number (NSN) 5970-00-557-4581, or NIIN 005574581, (insulator,bead) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 5970003424333.
There are 5 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, only one supplier is 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 assigned to Item Name Code (INC) 18299. [AN INSULATOR SPECIFICALLY DESIGNED TO BE USED AS A SPACER IN, OR IN CONJUNCTION WITH, SUCH ITEMS AS COAXIAL CABLES, TRANSMISSION LINES, BRUSH SHUNTS, TEST LEADS, HIGH VOLTAGE LINES AND THE LIKE. HAS AN AXIAL HOLE THROUGH WHICH THE WIRE PASSES AND THE LENGTH OF WHICH IS CONSIDERABLY MORE THAN 25 PERCENT OF THE LARGEST DIAMETER PERPENDICULAR TO THE HOLE. THE EXTERNAL SHAPES MAY BE VARIATIONS OF CYLINDRICAL AND SPHERICAL SHAPES.]. 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 5970005574581 contains an unknown precious metal.
This NSN is associated to Schedule B 8546900000: electrical insulators, nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 326199: all other plastics product manufacturing.
This information was last updated on Aug 01, 2025.