National Stock Number
2530-00-391-3994
National Stock Number (NSN) 2530-00-391-3994, or NIIN 003913994, (cylinder assembly,hydraulic brak) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 2530008482137, 2530007659561, 2530005748313.
There are 16 manufacturer part numbers associated with this NSN. 13 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 16 suppliers. Today, 6 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 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 somewhat common among different platforms, belonging to 5 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 11007. [A DEVICE CONSISTING OF A RESERVOIR AND/OR CYLINDER, HYDRAULIC BRAKE, MASTER WITH OTHER COMPONENTS NECESSARY TO DISPLACE FLUID FROM A CENTRAL SOURCE FOR ACTUATING THE SLAVE OR WHEEL CYLINDERS OF A HYDRAULIC BRAKE SYSTEM.]. 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 2530003913994 contains an unknown precious metal.
This NSN is associated to Schedule B 8708300050: brakes and servo-brakes and parts, of motor vehicles of headings 8701 to 8705. The Schedule B End Use is listed as other parts and accessories of vehicles. NAICS classification category 336340: motor vehicle brake system manufacturing.
This information was last updated on Jul 01, 2025.