NSN 3120-01-353-9018, 3120013539018
BEARING,PLAIN,SELF-ALIGNING

Federal Supply Classification: FSC 3120 - Bearings, Plain, Unmounted
National Item Identification Number: NIIN 013539018
Codification Country: United States
Item Name Code: INC 13208
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 3120-01-353-9018

National Stock Number (NSN) 3120-01-353-9018, or NIIN 013539018, (bearing,plain,self-aligning) was assigned February 20, 1992 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 7 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 6 suppliers. Today, 6 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 6 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 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: Not established. Not established.

This NSN is assigned to Item Name Code (INC) 13208. [A DETACHABLE ASSEMBLY IN OR ON WHICH A JOURNAL, GUDGEON, PIVOT, OR THE LIKE MOVES. IT IS USED TO CARRY A LOAD AND TO REDUCE SLIDING FRICTION. IT DOES NOT EMPLOY ROLLING ELEMENTS. THE ITEM CONSISTS OF A BORED PRECISION GROUND BALL (OR SPHERICAL PLAIN BEARING) AROUND WHICH AN OUTER RING IS FITTED. THE ASSEMBLY MAY BE EITHER SEPARABLE OR NONSEPARABLE. EXCLUDES:BEARING, PLAIN, ROD END AND BEARING, PLAIN, SPHERICAL.]. 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 3120013539018 does not contain precious metals.

This NSN is associated to Schedule B 8482300040: spherical roller bearings, single row. 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.

Technical Characteristics

BORE DIAMETER: (ABXV) 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM
INNER MEMBER WIDTH: (AGGJ) 0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM
LUBRICATION FEATURE: (CTLM) SELF-LUBRICATING LINER INNER MEMBER
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OUTER RACE MEMBER
MATERIAL: (MATT) STEEL COMP 440C INNER MEMBER
MATERIAL: (MATT) STEEL COMP 630 OUTER RACE MEMBER
OUTER MEMBER OUTSIDE DIAMETER: (AGGF) 0.6870 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM
OUTER MEMBER WIDTH: (AGGH) 0.3120 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM
STYLE DESIGNATOR: (STYL) WITH INSERT AND/OR LINER WITH STAKING GROOVE
SURFACE TREATMENT: (SFTT) PASSIVATE INNER MEMBER
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) UNABLE TO DECODEUNABLE TO DECODE
MATERIAL: (MATT) UNABLE TO DECODEUNABLE TO DECODE