National Stock Number
3130-01-188-1981
National Stock Number (NSN) 3130-01-188-1981, or NIIN 011881981, (cap,pillow block) was assigned August 31, 1984 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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 somewhat common among different platforms, belonging to 2 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Feb 02, 2005, 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 annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 21546. [AN ITEM DESIGNED TO BE AFFIXED TO A BASE, FORMING A HOUSING FOR A REMOVABLE BEARING OR THE BEARING MAY BE AN INTEGRAL PART OF THE HOUSING. IT IS USED TO PREVENT THE ADMISSION OF DIRT AND/OR FOREIGN MATTER, RETAIN THE LUBRICANT AND TO POSITION A SHAFT OR THE LIKE.]. 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 3130011881981 does not contain precious metals.
This NSN is associated to Schedule B 8482991050: parts, except inner and outer races, for ball bearings, (including ball bearings with integral shafts). The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332991: ball and roller bearing manufacturing.
This information was last updated on Jul 01, 2025.