National Stock Number
3020-00-155-7179
National Stock Number (NSN) 3020-00-155-7179, or NIIN 001557179, (chain,silent) was assigned January 17, 1973 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 2815010967679.
There are 5 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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, with the most recent procurement date of Jan 21, 2020. There have been 5 contracts issued for this part number, with 5 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7L020V2566, SPE7L018V4288, SPE7L116V4597, SPE7L116M1996, SPM7L311M4110. The total value of the awarded contracts has been US$ 5,140.30.
There has been a small amount of 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 Dec 10, 2013, 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) 04449. [A FLEXIBLE MECHANICAL DEVICE CONSISTING OF INVERTED TOOTH LINKS, WITH OR WITHOUT GUIDE LINKS, AND USED FOR POWER TRANSMISSION. THE LINKS ARE JOINED BY PINS AND MATE WITH THE SPROCKET TEETH WITH A SLIDING ACTION. EXCLUDES:FLEXIBLE MECHANICAL DEVICES SPECIFICALLY DESIGNED FOR USE WITH COUPLING, SHAFT, FLEXIBLE.]. 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 3020001557179 contains an unknown precious metal.
This NSN is associated to Schedule B 7315120000: articulated link chain other than roller chain, of iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 333613: mechanical power transmission equipment manufacturing.
This information was last updated on Aug 01, 2025.